Jake_IN
Full Access Member
I think you are wrong
Taken from this article
http://www.thedieselstop.com/forums/f30/how-put-6-speed-zf-2wd-idi-52618/
"First of all, you have to remove the approximately 1" thick adapter plate the IDI's use in order to get the clutch and flywheel spacing correct. In other words, the bellhousing on the ZF6 is deeper and the input shaft is shorter, so the spacer has to go."