my cobra is a Twin turbo hp twin 57mm kit, on 9-10 lbs, tuned, making in the 515-560 range. 1st race was the best race we were pretty even up intil the boost kicked in, 2nd race I missed third still was able to beat him past 90 mph, I have both on video, just waiting for slow ass Utube to finish loading. The camaro was also a vert, roll cage, cam, heads, Nos. had front runners on his car, cragars IU believe, only weight reduction I have is tubular K-member, A-arms, coilovers, on a heavy vert.