It is a basically stock 73 challenger rallye. 14" wheels 245s, eddy RPM airgap, headers, 3.23 rear suregrip, 750 performer, cam is stock .429 int .444 ex or .286 and .296 at lifter. It will burn the tires for about 75 feet and chirps the tires in third sometimes. Just feels sluggish getting started. Is it a 727 or a 904? Seems like it changes into second gear way early? thanks