Just to close the loop: 905570 is now on it's way to Copart. Hated to do it, but it was the right move for me right now.
I just bought a 2011 BMW 335D that has north of 800 lb-ft at the crank, and 660 dyno'ed at the wheels.... It's sort of fun.

I'll try to keep an eye on Copart and list the auction on the board if I find it, and I'll be selling the parts I have left on ebay in the interim. Seller name is the same as my username here. 034 TCU just listed last night. Also have an RNS-E purchased from DHall here, and an owner's manual. PM me if interested!

Drive safe!!
-Brad