regarding what sydneykid said,
-throttle response is nice for the street, toque is better. think of 4AGE vs LS1, i know what i'd rather drive every day. this is not taking into acount fuel consumption, and in the GENIII's case, oil consumption
-toyota dont have a good box for the 2JZ, they used a getrag, so there is a very good box, who gives a f*ck if toyota didnt build it
-if you dont have traction, you havent set it up right. i'm guessing theres are more supras out there running 7's than there is skylines (not on slicks either) not to mention there is no variable for the driveline, it will be rwd whatever motor goes in, i doubt this thing will be made into 4wd (prove me wrong.... please...)
-very good point about the engine and how it ties in, not just what the engine itself is, in this case, i'm still sticking with the 2JZ