I went to look at a 79 Grand Prix SJ with a 301 4bbl, 4 speed with buckets, A/C , posi rear and a lot of other options.
Has all it's original documentation including dealer sales slip, build sheet, etc
Complete, running car, with all it's original equipment still with but I only moved it due to the water pump ready to self-destruct. Trans shifts into all gears, and motor feels like it's running on all 8 !
Floors and trunk appear to be very solid
It's advertised as one of 241 4 speed cars for 79
The bad:
rusty rear frame back by the bumper absorbers.
Someone added a pop-up sunroof at some point.
Needs a total restoration.
It would definitely be a fun summer driver, just don't know if the investment would be too high to justify the limited (IMHO) appeal of this car