Where can I find a used dash for a 2009 bmw 650i with heads up display.
That's going to be tough to find. Search online or talk to local auto salvage yards, or your nearest BMW dealer, maybe they have connections or a contact for you on used parts.
Try the various classifieds in online BMW forums like bimmerforums, M5Board.com, etc.
Search BMW 6 Series Questions
BMW 6 Series Experts
Related Models For Sale