i dunno. if it were me, i personally wouldnt want to be tearing into a hand-made Z06 motor. not saying its wrong to mod it, but i wouldnt be a fan of changing much on that car if it were mine. if you want something faster and still be a corvette, then ZR1 it is. and i dunno what there is to rreally mod on these cars. thats just my opinion tho, not knocking it. either way, the price is right on both cars, considering the performance they put out.