From just having built (from scratch) a 4G63 and rewired the car to run it, myself, with ALOT of help from somebody who has been 'in the game' for 20 odd years, I definitely suggest that you DO NOT tackle ANY sort of engine work unless you know what you are doing.
The potential to f*ck up the slightest thing and cost yourself $$$ is huge.
The potential to f*ck up the slightest thing and cost yourself $$$ is huge.