Oh damn, I lost my key. 1982 240d.

[jeffr0000]

Last week I delivered my old truck to a guy in N. Carolina. I lost my other keyring somewhere between St. Louis and Wilmington and it had my only key to my recently-purchased 1982 240d. This key operated both the doors and ignition. I'm looking on the parts site here and I'm finding the ignition lock cylinder, which should be all I need there I think, but nothing for the doors. What should I do?

Thanks for looking, and here's a picture of my old truck running Highway 129 (tail of the dragon) on the delivery run.