The engine is not the weakest link. The rear end (spider gears?) will get eaten up by the power before the engine does unless you are lookong to go more extreme than anyone here has done. Look to guys like grip grip that are in the 11s and run frequently. Besides the known IC and rear end issues id say you are pretty safe but again I don't know how extreme you want to go. There are a few low 12 second daily drivers out there and a couple 11s if you count the SC v8 guys