Having the opportunity to inspect my 535i on a hoist yesterday I noticed a crack in the rear exhaust manifold. I am looking for a replacement unit as I know this one is not going to last forever. My local BMW mechanic has told me he won't drop the exhaust unless he has one on hand. The car is an 85 535i 5 speed. and it is the rear manifold. Thanks in advance.. Derek Atkin 85 535i 129k