I just purchased an 86.5 Supra 7mge w/ a 5-speed which the previous owner ran out of oil and completely ruined the engine (3 bearings in the block broke and made a mess of everything inside). An engine kit costs almost as much as a JDM engine so I was wondering if I should go 7mge or 7mgte and if i go with the turbo what other mods would i need to make? i.e. wiring harness tranny mods computer etc.

I hate crying "search" but come on, the best advice anyone can have on a forum is to search first, then if you can't find the information you need post. I just found 77 posts when I put in "turbo swap"...
http://www.automotiveforums.com/vbulletin/search.php?searchid=401617
From that you would have found these...
http://www.automotiveforums.com/vbulletin/showthread.php?t=182202&highlight=turbo+swap
http://www.automotiveforums.com/vbulletin/showthread.php?t=214255&highlight=turbo+swap
http://www.automotiveforums.com/vbulletin/showthread.php?t=225182&highlight=turbo+swap
http://www.automotiveforums.com/vbulletin/showthread.php?t=162381&highlight=swap+%2Agte%2A
http://www.automotiveforums.com/vbulletin/showthread.php?t=187481&highlight=swap+%2Agte%2A
And the list goes on and on, hope that helped some. :) :p