If that's in D and it's up one width, that's exactly the spec! In my experience, the Chevelle is less dominant in said spec, though. If you're interested in S^4, the Charger is a better leaderboard choice, and the Z28 and Boss 'Stang are pretty competitive. I like the Charger and Boss; the Z28 is more of a hotlapper in my hands for some reason. We had a lot of fun running grip vs S^4 in D class a few times at Road Atlanta. Somewhere on this site, there are pics with Detrick and myself in Mustangs and Bimmer and someone else in small FF cars. It was also good for practicing clean racing; there was lots of passing and lots of being passed.