Originally Posted by That-Guy

this is truly a buyers market right now, if you hop over to the supraforums classifieds, there are eye popping deals that come up literally every hour. I wish i was starting a project right now, as i don't think there will be a better time to take advantage of low prices on used car parts than right now. If your end power goal is in the 300-400hp, then i would definately consider a stock jdm swap, although alot of people say go na-t for that range, i believe that there are too many nitty gritty details that its not worth going na-t unless your going to go all out. Whereas you can easily be in that range with a stock aristo swap and everything will work like stock, it will be quiet, comfortable no tuning required etc. I can tell you that most supra owners that were once bpu and went big single say that they miss bpu more than anything. Toyota had a phenomenal setup going already and everyone comes in to tweak it, but there is alot to be said about a stock gte.

There are frequently complete 2jzgte and 6speed swaps as a complete unit (engine and tranny with all the goodies) on ebay for a little under 6k shipped. Thats a good deal to me, and i'd run with something like that if i were you. It will put you in a decent power range, but you won't lose any form of driveability and you'll have a nice gte to go single with if you ever get the bug down the line.
You said "since all this car is doing is being my Drifter/Time Attack/Daily Driver" Now thats alot to ask of a car, and if you truly are going to attempt to build the all around beast, i would definately recommend doing a swap and not na-t, and i would definately recommend keeping it bpu and not going single. You don't need any more power than bpu for any of those.

Alas, if you're aiming for more power, then it really doesn't matter if you go na-t or gte, because if both setups are built properly, they can both provide tremendous power.