i would first ask what your goals are. what is your budget, because if its high, go for boost, and ignore bolt ons, the 94's arent as responsive to bolt on mods as the newer models are.
but if you do want bolt ons, check americanmuscle.com they got tons of parts
__________________
2007 Satin silver 4.0-"Sadie"- Dual exhaust with violators, JLT CAI and 93 bama race tune, motive 4.10 gears and FRPP limited slip differential BEST E.T.- 14.485 AT 94.1
1985 Regatta Blue 'vert 5.0 LX-"Sally" 87 5.0 HO motor, BBK O/R H-pipe, 1.7 Roller Rockers, underdrive pulleys, A/C delete, smog delete, currently under construction
what kind or where would i get a good idea of the power that i want, i used to have 89 5.0 so im just not as inpressed with it as i want to be dont get me wrong i love it but the power isnt there that i want. thank for the reply
I close to doubled the horsepower of my 2000 GT when I supercharged it. I talked to my insurance agent and he talked to the underwriter for State Farm.
They said they don't care if the car is modified as long as it doesn't affect the brakes or other safety systems and that I could get a speeding ticket in a Ford Focus.
Oh, and my insurance rates didn't go up. That was 2+ years ago.
__________________
"Ignore that whistle, it's just a vacuum leak."
2000 Mustang GT:
Saleen Series IV Twin Screw, Chicane I/C, AFCO Extreme H/E, 2.8" pulley, FMS 42# injectors, Dual Catted 2 1/2" UPR X Pipe, UPR LCAs/UCAs, 2 1/2" Flowmaster American Thunder kit, 90mm LMAF, 112" Goodyear Gatorback, Kenne Bell BAP, Mosaleen idler, T-56, Detroit TrueTrac w/ 373s, Demolet 100mm CAI, SCT XCal2 with JDM Engineering 93 Octane "Race" tune.
If you want to be faster than even a stock GT then you'll need a turbo or supercharger setup. The 98 and older 3.8L engines are anemic on their best day. You could theoretically do the split port swap and add 50-60HP like the 99+ cars, but if I were you I'd be looking for a good 5.0L doner car and swap that thing to a V8. Anyway you look at it, performance for the older V6 cars is gonna be a big chunk of change.
1994 Mustang 3.8 what kind of performance mods are available 
