This is what l have in store for my 91 mustang gt conv. next summer. Let me know what you think. Be truthful!! Engine Kit, Top End - Satin Cobra Intake, Gt40x Heads, & E303 Cam, 1-5/8'' Shorty Headers, 2.5'' Off-Road X-Pipe, & 2.5'' Catback. l know it will sound beefy but any ideas on the horsepower increase and any other ideas. Alos it is an automatic.

Oh yea, paint that baby candy red! Get some chrome exhaust tips.22 inch spinners.
(Drool)Mustangs are so sexy. l wish my hubby would get a real man is car.

kenne bell supercharger.that will give you 100 some plus ponies. then you wouldnt need the intake

thats pretty much all the basics you can do unless you want to touch the internals like cams and vaulves for fork out the money for a supercharger

Sounds great if it is factory geared go with 3.73 is Does the auto have a shift kit, or & original GT. Do not forget the Chip. With ur upgrades & chipping it u should be pushing about 330-350 hp. Add under drive pulleys,and & electric fan, & electric water pump & Cold air kit or a K&N conical & add about another 35-50 hp. This is my daily driver l have a 90 GT convert. What fun! You might want to go to 5lug, for better wheel choice, l went the Lincoln route 100 years ago now going with Sn 95 spindles & cobra 13'' in front & disk rears to stop my car it so fast fix it all over not just go fast it has to stop to. Subframes? Go with 31 spline axles for all the extra torque & 5 lug.

if anything forge the internals and buy a single or twin turbo for it. Car will be badass for sure, plus its more efficient then a supercharger and whatnot.

l would also plan on a set of 24lb injectors, a 65mm throttle body & a 70 mm MAF. Think of an engine as an air pump, the more air in & out, the more power. The injectors, maf, & tb have alot to do with the first stage of the pump, & r needed to maximize ur head, cam, intake investment. l would imagine u will see about 60-90 horsepower from this. All the parts u have mentioned r exactly the modifications l would do to my car, although l use a b-303 cam & a 5-spd. Like another person mentioned, a rear gear set will really make ur car come alive after the mods. I'd got 3.55 or 3.73. 4:10 is too low. good luck.

Stock 5.0 intakes manifolds suck, but with your mods l would see about 320 hp at the motor it has 225hp 300 ft lbs stock