I have a 1997 mazda 626 with a 2.0 dual cam, manual trans. I am wanting to change my bad engine with a fresh one, my question pertains to the transmission, mine is a manual and the donor car is a 1997 626 with an automatic.. I was told these engines can't be interchanged? Also was told there were just a few changes for the swap to work? Any help would be Great! THANKS