Welcome to Lextreme Diver!
I'm a bit of a newby too but nonetheless share your enthusiasm
I have an 82 4x4 single cab that started with a 2.2 Diesel, then a 2.4 with extractors, then a 2.4 Turbo and am currently putting a 1UZFE into and mate.... Its a job.
Here's a few things for you to ponder before starting (bearing in mind you may already have some of these mods done to your rig....):
To my knowledge nobody makes the engine mounts to bolt on, they have to be fabricated.
Bellhousing kits (bellhousing, flywheel, cluth pressure plate, driven plate, spigot, throwout and fork) are available to mate your V8 to your original 5 speed to make things easy or you can fork out an extra 3g for a dyna 5 speed from Marks 4wd adapters as i have done. They are one seriously tough box. I know someone down here that has used an auto box but internal mods required to mate that to a transfer case also.
Computer. Bout a grand. unless you get a half cut and run the standard ECU but everyone has told me its very hard to setup??
Wiring it up an aftermarket one is pretty straight forward (i'm a mechanic so not sure how hard it really is if you havnt done that sort of thing before). I'm using a microtech ECU and its all labelled, schematics, the lot.
Exhaust from scratch.
I think your model has a longer engine bay so radiator may fit with push fans.
I needed a minimum of 2 inch body lift for my clutch master to clear the rocker cover which led to having the steering shaft lengthened (actually, remade to pass transport)
I also think you may have the smaller universal at the bottom of your column in the firewall which should be right to clear the RH rocker.....
Depending on your "offroad style" you may need to upgrade your diff to a landcruiser spec to handle the extra load meaning changing rear AND front diffs to the 4.11 ratio.
Also depending on WHICH 1uzfe you source, you may need to reloctae your oil filter as my Crown filter mount was hitting on the LH chassis rail...
Engine is VERY close to the firewall also so you'll have to lose that handbrake mounting. Someone on here used a surf cablr that goes on the INSIDE of the firewall but i am relocating to centre floor.
I've probably missed a few things there but ALWAYS be prepared for your budget to blow-out just a bit....
Oh yeah, fuel pumps and surge tank if you havnt already got 'em.....
Your main costs are (approx): engine $1100.00, computer $1000.00, exhaust $depends what u want, bellhousing kit$1300.00
Its not as scary as it would appear. But i figured best be prepared for ALL eventualities!!! STILL..... worth EVERY PENNY to hear that baby purr in the only 4x4 worthy of one!!!
Sorry so LONG!!