I had bought a 1995 525i in May with 199k on it. everything was fine, a few lifters were sticking, and needed a little tlc. well i got hit recently and totaled it. Im getting ready to buy a 1993 525i with 139k on it. I had replaced the driveshaft in the first one so im pulling it off and putting it in the new one im getting. It was only in there 3 days. What else should i expect to go wrong if anything. the car im buying has a brand new head on it, with as of right now 0 miles on it. What else should i expect to start replacing.