it all depends on what you want. do you want to keep your current motor? do you want to stay N/A or go boost? as with most cars, make it reliable first, then intake and exhaust, then cd player
lol.
there are many people out there with a 5mge. i dont know a whole lot about that motor though. same family as a 7m but i think it has less displacement and the head doesnt flow as well. i beleive some people have swapped the heads though... dont quote me on that though.