Josh, I hope you are aware you need to change out the wiring harness and ECU, since the 1.5 motor is MAF based and the early beta 2s are map based. The 04+ beta 2's have the CVVT unit, which that is a all different animal.
My best advise is to get a beta 2 trans as well as the starter. The bell housing and 1.5 block are different (slightly) than the 1.6 which makes parts interchange a little harder.
__________________
|