I hope that you still need a frame, because I just picked one up for you!
It is a 1989 model year (red) with a clean California title - currently non-op'd. It came from a running bike that the guy tore down to make into a flat-tracker. He got as far as putting new bearing races into the steering head, then lost interest in the project and decided to part out the bike. I picked up the frame, engine and title. Frame appears to be complete and unmolested. I will clean it up tomorrow for a closer look and also take some pictures.
I am in northern California in the SF Bay area. It's yours with title for $100 if you arrange for pickup/shipping. Let me know.