hey. I'm actually doing this for a friend, cuz im not really looking to do a m50 swap in my 88 325is anytime soon. anyways, my friend has a 1992 M3 that he wants to get a new engine for. The M50 is the engine he should get right? and if it is, do you know about how much you could get one for. just a rough estimate is what he wants. thanks alot.