I have a higher milage car, going on 200,000miles, and, well, the age can be felt on the drivetrain. so here's the questions: 1) How hard is it to drop the propshaft and fit a new center bearing and front rubber 'doughnut' coupling? 2)Replace the tranny as well as differential mounts? 3)And lastly, changing out the rear oil seal, ans well as diff seals? Thanks all, I really need help. SpencerM '81 728i '83 733i/A