Well a kwi update, it does have the correct 372 bellhousing. once apart there were some faint machining marks on the flywheel but only in a few areas where the disc contacted. There were some on the outside area but not what i would consider very coarse
very irregular pattern of hot spots in the center of the PP if one looks closely its as though there was a thin area in the middle with two hotter spots and what appears to be lining transfer fading away. A corresponding pattern appears more visible on the flywheel side of the disc? Also found contact marks on the inside of the diaphragm fingers from the spring retainers. So more tomorrow but I'm thinking contamination?