Thanks. I don't know, it's never been at the track or on a dyno. I need to do 4:10's for my own peace of mind. I run a 93 tune with the FRPP hotrod cams & CMD plates, its a lot of fun. Often think about upgrading to something newer but its paid off and I know I'll always want more so what's the point. I don't have money for a new Shelby :-0