I recently bought a 2004 Ford Mustang Cobra SVT which is pulling 390 HP Stock from a private seller out in New York and was wondering what I could upgrade to increase my horsepower? I'm also thinking of purchasing a 2.8 Liquid Cooled Kenne Bell Supercharger with a substantial increase of 289 HP! But if you guys could please give me suggestions on how to increase my HP, it will be very thoughtful and thanks.

 

Well you don't necessarily have to upgrade to a twin screw blower, but you can definitely change the upper pulley to like a 2.8 and change the lower pulley, and get a tune and you will get some good extra horses out of just that alone

 

you can still do small things but end up being limited to mid 400's with the crappy eaton...a new KB would be a great improvement also a 2.3, 2.9, or a 3.4 whipple would do the same...a handful of people prefer whipple including me