i have never heard that the tranny wouldnt fit. if you want to do some reading (more of a how to on a 'teg swap in a 5th gen)
www.c-speedracing.com/howto/b18cswap/swap.php is the place to go and it should have what tranny they used in the ride. hope this helps. sorry if i didnt read the how to myself but i just dont have the time right now sorry