There are several sites dedicated to this motor and various swaps, Lextreme.com has a lot of good info as well as v-eight.com. My brother-in-law and I are in the beginning stages of this build and a few of the things to take into account, along with your budget, are your ultimate goal, part availability, desired HP... and whatever else you can think of.
Our build plan so far includes:
Stock ECU, but may go Megasquirt
W58 tranny and adapter plate to the 1UZ bellhousing
3VZ flywheel, but a 3sgte is probably better
Chevy T56 hydraulic clutch slave
bigger fuel pump
Some of the things we may change later:
Ford Explorer 8.8 rear (disc brakes and LSD)
one-piece drive shaft
S13/14 front spindles w/ Q45 brakes
5x114.3 wheels (Starion wheels, maybe?)
You can see our build here: http://forums.club4ag.com/zerothread?id=102033
We're not very far along the build process but we do have a lot of the components, everything except the clutch stuff.
87 MR2 4AGE, Racecar!
87 MR2, donor
91 MR2 3SGTE, it'll run someday
85 AE86 1UZFE, project car
88 FX16 GTS (x2), I have no idea what I'm doing with these cars