I raced my neighbor the other day in his Grand Am. I dont know what kind exactly, i know it is the 3.4 V6 but it isnt the GT. Anyway, at least to 70 my se-r is quicker. My car has an intake, the old hotshot headers, and some kind of custom 2.5 exaust with some Apex'i muffler. I dont really know anything about it other than it has a huge tip. Im not really all up on the aftermarket stuff. But I was surprised at how well it did against him. I have driven his car before and it feels faster than mine. So I was not expecting to beat him.