well well well , uninformed would guess at that wouldn't they? i wouldnt put a bloody weak as piss t5 in it, it would be tremec 6 speed conversion ( obviously the only thing to handle torque ) , how dumb do you think iam to break something doing a CAI install mate?? seriously i have owned 3 of these cars before!!! the reason for this is it has unrestricted flow and eats every bit it can and the poor computer has to compensate.... anyway, other 'CONSTRUCTIVE" feedback plz, the eaton unit is un-efficient and boring, dont want another ecotec as its not nearly as built as this block is, and im not leaving it alone after this is done it just seems like a much better platform that a busted as$ ecotec like 92% of commo owners out there, but ITS SOMETHING DIFFERENT and you ppl seem to be afraid of this.... neva know if ya neva try ...