Anyone got any leads on where to find used 4D55s? I see 4D56 pop up on eBay every now and then. I know there's a MM boneyard in NC that might have a diesel motor available but I don't know if he'd ship. I'm in the Bay Area. I've been looking through local Pick And Pulls and gassers show up, never seen a diesel.

Also, how much should I look to spend on a used non-built 4D55? How much would a rebuild cost?