Got my 8HP swap to work in my E90 330i.
Bought a 8HP from an E84 sDrive20i. Flashed it to E89 sDrive28i mapping and reset the ISN. Replaced my MSV70 to MSV80 and replaced the usual modules with FRM3 Max Brose, CAS3+, JBE3.
Gearbox needed an extra hole and I used an N55 torque converter. Bolted it up right on my stock flex plate and repinned the 6HP harness to 8HP. All works, got some errors that I need to fix (coding CAS and wrong airbag module because of a missing signal), mostly easy stuff.