Someone around here was making over 190whp with these headers and a few other mods on a 2.5, nothing major. That's pretty impressive. As for price and installation, well, you gotta pay a lot (money and time) for a fast car.
Matt
2002 Subaru Impreza WRX (WRB Stage 4+)
Old Rides:
1999 Sil-Fro SVT Contour 3.0L with goodies (Totalled 6/21/06)
1988 Bronco II (Sold)
You know you launch hard when you beat oncoming traffic through their own crosswalk lines.