The Street Heats have more porting capability because of the higher ports, but out of the box, the TW's make about 10 more hp. The TW's don't require new headers too.
------------------
Dustin
Saleenized 89 GT,428 rwhp,TFS Street Heat Intake,TFS TW Heads,TFS #2 cam,BD-11A 9 psi,FRPP 1.6 rr's,BBK 70mm TB,Pro-M 75mm Bullet,MSD 6BTM, FMS 9mm wires,BBK longtubes,BBK Short H-pipe,American Thunder cat back,3.55's
12.3@119
|