Resurrecting an ancient thread, I know :o Just wanted to point our azn kiddo over here.
I also dug some pics out, just for you, nbcazn. Here you can see how the tranny sits in the chassis:
(gosh, this is pic seems like ages ago...the underside is literally sandblasted now)
Here you can see the finished truck, complete with wing and fans
Hope this helps a bit. And remember what I wrote you, learn as you go along. You're young, and I give you respect for trying to do it (instead of asking to buy mine;) ) Good luck.