I ran a cheap report on the internets and found THIS:
Current Title Information
So..... it WASN'T SCRAPPED after I traded it in, in 1998. IT MAY STILL LIVE.
Also, that U in the VIN, on every VIN decoder I find says that was a 1978 305ci V8, and they don't list a code for a 1977 305ci V8. Odd. I know for a fact that it had a 305, maybe it was even rarer of a car than I thought?