I'd seriously look into a Toyota 3RZ swap, or a 4.3. Most people that do a V8 swap end up regretting it. Just make sure you've done all your research. I'm just saying this, because we see it here all the time. Guys drop in this motor that they have laying around. Just because you have it doesn't mean its a good idea. We are willing to give you any info we can, just ask. A good place to read up on motor swaps is over on Pirate4x4. You may have to weed out alot of crap to get to the good info, but there is all sorts of engine swaps documented over there, including all their headaches they run into along they way.
Hope this helps?
I don't want to sway you away from your decision, just want you to be making an researched, educated decision.