This sounds like an awesome swap. I have a couple of questions:
1. So as long as you use the m52tub25 intake manifold everything else is plug and play? As in you did not have to make any customer modifications to either any electrical connections? Exhaust? Drive shaft, mounts, anything, etc? or was is just as if you were swapping a m52tub25 back into it?
2. Do you know if the 323 transmissions fits the m54?
3. Did you do a dyno to see what you were getting out of the motor with the m52 intake and dme? I have Beltronics FX2 so if you want to get an idea let me know.
4. Finally, I am in the GTA also and I am just wondering how you found the engine? What are some specific places I can start calling?