What would be the complete parts list for doing this an would it be an inexpensive way of supercharging my mach 1. Also iv been tol its very hard to find the lower intake from an 03 cobra any suggestions?? an what kinda of power can my stock short block handle??
Your car isn't set up at all for supercharging. I will elaborate a little more than Brutal did. Your bottom end is not forged as the Cobras are and your compression is too high. The Mach was meant to be a high compression naturally aspirated engine. To change from that set up would require a new forged short block with low compression pistons if you wanted it to last any time at all.
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Your typical Terminator with all the usual mods Ford meant for you to do right after you left the showroom.
The parts list is about as long as your arm! It's not necessarily inexpensive, but if you are able to acquire all the parts and do most, if not all the work yourself, it will be less expensive than purchasing a supercharger kit and having it installed.
Because of the 10.1:1 compression of the stock Mach 1 motor, you would be limited to low boost, in the 5-10psi range, with 10psi being the absolute max! Depending on the type of blower, roots, twin screw, centrifigal, you could see anywhere from 400-470rwhp, and a corresponding number for rear wheel torque. 450-465rwhp is the generally accepted maximum for a stock block Mach 1 motor, anything beyond that, and it's a crap shoot!
A good alternative to supercharging a Mach 1 motor is nitrous. Because of it's high compression, it takes to nitrous very well, provided you keep it in the 75-125 shot range.
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2003 Torch Red Ford Mustang Mach 1 5-speed
FRPP Aluminator Long Block + Kenne Bell 2.1 527.52 RWHP 495.15 RWTQ @16psi on 93 Octane Custom Tuning by Tillman Speed
The 5 speed Mach's use the Forged Cobra crank while the Automatics use a weaker Cast Nodular with a different flywheel bolt pattern, But the real issue in both motors are the Rods and Pistons, like the 99-01 Cobras if you wanna supercharge with A Lot of Boost you need a Forged bottom end with ARP Hardware!
And actually 10:1 compression is OK to throw A Lot of Boost at, you just need a very good tune and fuel system! I used 9.5 Manley Pistons with Full Floating Pins & Spiro Locks and planning on 15+lbs with the Vortech!
There is a guy in my town with a 03 Mach 1 fitted with an Eaton Roots blower from a 03/04 Cobra. He spent months modifying parts to fit it, and is running the biggest pulley he could find LOL. The sad part is, a pullied Cobra tears him apart. I also read an article about a cintrifigual charger on a Mach 1 as well.
Best option, get an aftermarket kit or sell your car and just buy a Terminator...I know the thought is that the blower itself is relatively inexpensive, however, the adaptation is not practical.
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"Goose, Hollywood's fine, I want Viper"
1995 Mustang GT Cnv 347(427 stroker being built!) almost done!
1996 Cobra with Kenne Bell 2.1 Supercharger and every other conceivable part you can bolt on it...650hp upgrade in the works
2003 Infiniti M45 V8 340 hp...a methadone treatment for reformed Mustang drivers
Swap Eaton M112 on 2003 Mustang Mach 1? 
