69 Grand Prix SJ value??
 

My cousin is a minister and somebody donated a really solid 69 Grand Prix SJ to him. He asked me to help him sell it. I'm not sure what tostart off asking for it. The body is unbelievably solid. Only some small surface rust. The car looks original but has been painted and is a crappy paint job. Mechanically I'm not sure yet. When I get a break in the weather I'm going to go back and put a battery in it and see how it runs and drives. Also I plan on checking the engine numbers to see if it's the original engine and see what size it is. Can anybody help me with a link to engine codes? I know Pontiac used the same codes on different engines depending on what year so I'll have to verify the year of the engine first. Also if anybody has a link to head codes that would be helpful too. I think they were either c5 or 5c. Should've written it down.

Any links and info would be greatly appreciated.