[xquatch]

A couple updates:

• Regarding which variant of 45BZ donor I have, some units recently hit ebay that list the same QR code of my donor unit (1089 301 161) and they list them as coming out of the F80 F8* M3 M* cars, so this appears to be one of the SH** variants. Anyone have access to ZF aftermarket to cross-reference the QR codes?
• Some think the stock e90 clutch/flywheel will not work with the longer bellhousing. I've found solutions in other forums where people have used longer clutch release bearings to adapt to clutches with different stack heights. I am searching for a potential solution - either another make/model bearing, or a way to fabricate the same.