I agree with Tenacious, read alot. Perhaps you can start out with an LS-T and if you want later on, going with a VTEC head. Hell, you could bore the LS to 84mm and have a 2.0. There are just _too_ many options for everyone to be throwing out there.
Get in touch with people who've done this kinda stuff, John @ SS, Tenacious, and others here. There IS stuff to learn from the right people.