I know it's probably in this thread somewhere... multiple times at that... but just picked up the truck and it's been a quite a while since I've been in the loop. I want to put the 3gear in, all I need is 3gear case, 3gear motor plate & gear cover? If I'm correct, let me know!... I don't see anything about a different idler gear? And I don't know if I need a different waterfall? I don't see anything about the extra stuff so I'm assuming I don't need the extras. Thanks in advance!