Saleen did set the rev limiter low but, with the factory intake it really doesn't make a whole lot of difference. I believe it was 5300 rpm. I could be wrong. I tried to get Saleen to do the conversion on my car since it never was EPAA compliant but, they refused and I haven't pursued it further since the only reason I wanted it was to pass emissions. Plus I haven't had the time to talk to a lawyer. I may have to have it done anyway do to moving around again. I may end up on the West Coast again sometime next year and the military no longer allows you to keep your car registered in your home state! California was the reason for the change. Sorry, I don't have any spare 18X10 rims laying around. Wish I did. I actually need a set for a car I have.