Reason for no aftermarket, is this engine was only stuck in a big ass SUV, people in general wont make the transition from, take the kiddies to soccer practice and get groceries to, hmm...I wonder just how fast I could get the kiddies to the field and to the store and back with the old six banger...:D
Now if GM woulda pushed their twin turbo SUV prototype in everyones faces, as they sat in the dealer showroom waiting for the salesman to come back from speaking with the "manager" as to whether they could give them the "deal" of the day and shown them how 400+hp was tangible...then things would be different and much more inliner friendly.
Sad part is, the gen III v8 in a ligher/aerodynamic vehicle, this is the higher hp LS1/LS2 versions, actually gets really nice mpg, 30 isnt out of the realm of possibility.
