If anyone's interested, my old roommate has a 78 280 for sale...
90,000 original miles, current registration
Fires right up, runs good. Could probably stand to have the vacuum hoses replaced.
Interior is in pretty good shape, however the rear deck carpeting has faded, if you lift up the luggage belts, it's black, where as the rest of the carpeting is tan.
It's actually a damn fun car to drive...
known problems:
Needs new clutch slave cylinder
Needs new A/C compressor, A/C blew cold until compressor siezed
dent on passenger side fender
She wants $1000 for it