A GSR won't give it a run for it's money <img src=icon_smile_angry.gif border=0 align=middle>.
It only has 170hp, 120 or so lb-ft of torque and weighs about the same, plus has worse gear ratios due to only being a 5-speed.
The RSX and GT-S will be a good match for it. V6 Stangs and Camaros aren't.
<img src="http://www.hyundaiperformance.com/upload/4doorGLSig.gif" border=0>