OK I just went & looked and my mounts are opposite from yalls. Everything except my headers went together perfectly. I didn't have to modify my driveshaft length or tranny crossmember position. Do you guys know if your driveshaft is gonna have to be shortened or not? As for the part # on the headers the catalog doesn't show a # but I don't think there are different types of type III headers, I think the type III is the G-body header. I've had the motor in since Nov. 2005, notice the rub line on the #2 tube, that's where I turned it over on a rubber mat and beat the hell out of the bottom of the #1 tube I hated to do it but they wouldn't seal. Lookin back on it I should've sent em back but I already had my exhaust done & I really didn't want to use stock manifolds.