Hey Cyrus, I too have aquired a 2JZ-GTE drivetrain. It finally arrived this week from Minnesota after waiting 3.5 months...Grrr...
Anyway, all is now good in who-ville.
Here are the specifics on what I have and am doing...
The bottom end was refreshed and has only 200 miles on it since rebuild. It was used in a Toyota pick-up drag truck. With a T-72 turbo at 28 psi, the truck dyno-ed 679 RWHP.
I figure if I am going through the trouble of installing the drivetrain, I will not want to pull it apart right away. The head was not refreshed at the same time as the engine (found out afterdoing a leak down check ... Grrr again...), so I am refreshing the head, doing a little light porting, polishing, and adding a set of aftermarket cams (either 264's or 272's). I will be running the n/a 5-speed (until it breaks) and a 700 ft-lb sintered iron clutch (came with my drivetrain). The previous owner was running SDS, as will I (already installed in my car for the L28, so should just be plug-n-play for me). The drivetrain also included an unorthodox underdrive pulley (SDS magnets already installed), ported intake, dual feed -8 a/n fittings feeding 87 lb injectors and all accessories (alternator, starter, etc). It did not include turbo(s), but I wanted to go a little bigger anyway, probably a T-78.
I am putting an L28 back into the car for the next SEZS event (because it took so long for the engine to arrive), but plan on beginning the swap after returning from Reynolds in March. If you get to the engine mounts before I do, lemme know how you decide to do them. If I get to them first, I will let you know. I hope to start a web page documenting the process in a couple of months.