Are you going to turbo the 5s or get a 3s motor? You can get a turbo transmission (E153) off a JDM 3s-gte clip which will save you a lot of money or wait and see if you can find one in the f/s section. For piece of mind and with a warranty, I would suggest you contact Josh Boam at Chico Race Works. He is a board vendor and can get you pretty much anything you need. His email address is
the_mister3@yahoo.com.