i noticed there is a 6 cylinder m3 for 1500 on craigslist..its an s50 whats the differences in these motors whether it is an s52 or s50 i would really love to get tht s50 for 1500$ that seems like a great price considering the other post seem to all say around 5k for this kind of swap so y does it seem that this engine is cheaper thent he rest of them |