[ModMustang97GT]

Correction on the 90mm MAF. It is the MAF sensor I was thinking of, my bad. However, the point is this. The corba, a factory supercharged engine comes with an oval TB that flows as much or more than a 75mm TB. And if you plan on getting FI, you should buy the best TB for your Set up. If you are getting some crap Supercharger kit that gets you a total of 360 hp, your 75mm TB will be fine cause your car isn't doing much. If you get a kit putting out 430-500, you will definitely feel the difference in a 75mm and a dual 65 or Big Oval TB.

[97S281]

the only aftermarket setup to show worth while gains is the accufab tb AND plenum. This is from sean hyland motorsports. they have been building mod engines since they have been making them and have written several books on how to build maximum performance for the 4.6 and 5.4 engines. they show dynographs for different tb setups and accufab was the only one to gain any hp, and honestly that is still pretty minimal at 10 hp on a stock gt. it's not really worth the 350 bucks for the setup unless you plan on some significant mods to go with it.