Your 2 cents goes further than no cents. Yeah time isn't really an issue and with the time comes money. The idea is to buy an engine no one expects to ever see suck, bang, squeeze, bang, or blow ever again and put it on an engine stand for the next how ever long it takes. Forcing me to upgrade the more expensive parts.
How does the mounting work from year to year, model to model? If I do find a M3 engine will it swap fairly easy? same goes for the 2.5 engine? I assume it's just a matter of engine mounts but I know how germans love to weasel a 3 inch square in a two inch circle from my previous volkswagen projects.
Also, currently I have an automatic tranny. I am going to swap to 5 speed, does the M tranny, 2.5, 1.8, 2.0 all interchange? Long time till I have to worry about that but it would be nice to know what I should keep my eye out for. Junk yard has a few bmws with good trannys in town.