honestly, the quickness, comfort, and reliability your get from an LS1 equipped cars is almost untouched, i would have to compare it to an 03 Cobra, in most aspects minus power, but very few mods on an LS1 will net you mid 12's consistantly. i mean take Corey R for example, i believe he just has a stall, headers, exhaust, and nittos and he is doing 12.3 (when he wants to lol)