mate owns that beige on now and we both just bought another ke70 off a guy on these forums.
we are going to base the new one on drifting,
i own a 180sx also but don't wanna thrash that around the tracks to much more.
basicaly we are going to run the 4k for starters and do all the corona struts etc in the front to achieve the camber you want and just stiffen it up with a locker.
newer engine is definitelythe go but that will happen later on