its not a bad idea, im all for sleeper cars, but your going to have to gut the living hell out of it to get the weight down some. the extra torque doesnt hurt though

pretty much all the 4g63 stuff, like the manifold should bolt up. if it doesnt, i think a 4g63 head from a 6bolt fits perfectly, but i could be wrong, im not to knowledgeable in this area.