getting rid of your spare tire and installing a lighter exhaust system i guess... Might also consider not filling up your fuel tank past half full, perhaps.
sorry i dont think i was much help
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Current Mods:
Tinted windows
Pony Package grille
Single GT takeoff muffler
Rear Black-Out panel
"MUSTANG" 3rd brake light decal
Soon to come:
Custom exhaust pipes (for true dual GT takeoffs)
Rear anti sway bar
CAI + Tuner
A rear seat delete kit will save you some weight. Some other stuff would be to loose the spare and jack as Alpha said.
Other than that, you could try a lightweight battery. Those run a pretty penny but are less than half the weight of a standard battery. Use a relocation kit to move that battery from the engine bay to the trunk. It doesn't cut any weight but it moves some to rear tires for better traction.
Other than that... Gut the stereo system and remove your A/C system if you are serious about loosing some pounds.
Also, stay away from gas with lots of trans-fats.
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'01 Silver V6 5-Speed Show:17x8 Anthracite Bullitts w/Kumho 255-45s, spoiler, smoked headlights and fog lights, black LED 3rd brake light, Mach1 grill delete, Mach1 chin spoiler, splash guards, Hurst badge, chrome exhaust tips, carbon fiber bumper inserts, 8" antenna, black hood stripe, 232 badges, Ford Racing license plate frame (in the box: hood scoop, rocker stripes) Go: Divorced dual exhaust w/Original 40's, AM CAI, Hurst shifter, SCT 91+ Tuned
i did every thing redlyr said except battery and i am doing the ac soon maby. My girl got in my car and said who stole your interior haha it was funny cause i stripped my car down to the metal from the rear seats to the trunk...its wierd cus i noticed i can hear my gas tank splash around...so much lighter you can feel it.
can any one suggest a beefy yet very light battery?
what kind of metal would be used in a light wheight exhuast system such as pipes and all?
oh which reminds me ive been wanting to look into a bigger gas tank for those raod trips i love to take =)
roush makes carbon fiber qtr panels...but id hate to get in a wreck...theres no fixing that . your drive shaft is a good one so spend some money and go aluminum...spare and jack, racing seats is a good one, lighter wheels is also something you may look into
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2006 4.0 V6 Mustang/X Charger #128 Mods: Too many, check out my profile. Probably currently under modification...
2005 V6Mustang coupe. Automatic. Black with Charcoal Interior
Mods: JLT CAI, Bamachips 91 race tune, single Mustang V8 muffler, Mustang V8 swaybars
Looks: smoke front turn signals, sequential taillights, 14" shorty antenna, MRT rear window louvers and a little chrome for the interior 2000 C5 Corvette convertible, Torch Red with Black Interior. Full of options, Corsa exhaust 1990 Ford Bronco 351ci engine- it runs.
unless your going to put your car on a major diet, race seats,this that and other! why bother,are you going racing for a living,you could spend alot of money for this diet to have a 200 lbs lose on a v6.
not nocking the v6,i got one,just not worth it imo.
go with a cai with a tune
good luck
i want to put about 600 horses in the v-6 block nd taking some weight out will help with racing. new track is beinng built near me so I want a fun race car/ daily driver thats why i wanted to take some weight out of the car
This is a shot in the dark but I think an aluminum radiator will shed some pounds and cool better to boot.
You might be able to replace some engine accessories and bracketry with lighter versions.
fleshmcfilth123 jokes about cutting the roof off but actually if you cut the bulk of the roof out you could replace it with a retractable canvas panel, there's a company somewhere that makes a kit for that..can't remember the name but I believe it's a universal kit.
Lighter seats are good but you may want to invest in a passenger seat that you can quickly remove for racing, it might be as easy as adding wing nuts.
I don't know how much the stock spoiler weighs but you can probably do without it...
That's all I can think of for now
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2006 4.0 Mustang
Pony Package
Vortech V2 Supercharger Non-Intercooled @ 12 PSI
Snow Performance Stage II W/M Injection
Accel Super Coil with MSD Wires
Flowmaster A/T Axleback
Autometer Gauges
Pioneer Head Unit
i want to put about 600 horses in the v-6 block nd taking some weight out will help with racing. new track is beinng built near me so I want a fun race car/ daily driver thats why i wanted to take some weight out of the car
You want a stripped-out, lightened up car to be a fun daily driver, and 600 HP out of the V6..? Not asking for much... Keep your V6 S197 nearly stock and looking good, then find a straight Fox Body to gut and play with... I understand they go very well with a 383" Chevy Mouse stuffed in 'em.
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'08 Bullitt -Highland Green
'09 GT-500KR -Black/Black
This is an example of the ragtop kit I was talking about. There may be other manufacturers or places with better prices. Don't know how much the roof weighs but I think there's potential
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2006 4.0 Mustang
Pony Package
Vortech V2 Supercharger Non-Intercooled @ 12 PSI
Snow Performance Stage II W/M Injection
Accel Super Coil with MSD Wires
Flowmaster A/T Axleback
Autometer Gauges
Pioneer Head Unit
S-197 Diet, how do i lighten my car 
Keep your V6 S197 nearly stock and looking good, then find a straight Fox Body to gut and play with... I understand they go very well with a 383" Chevy Mouse stuffed in 'em.
