Originally Posted by Bimmersrbest
I was just wonrdering if anyone knows where to buy a used or rebuilt S54 engine?
You can always try http://www.bmrparts.com/
. They got tons of used parts, but, in my opinion, their service and "honesty" suck ass. I've bought a few things from them and the entire experience was lousy.
I've got a source for used parts, email me your email addy and I'll try to help you out.