I am buying a 1978 King Cobra. Floors are great, rear quarters are great. Doors have some surface rust. Carb is clogged but starts when you pour gas in the carb. Leak in front transmission seal. Gas tank will probably needed to be changed because of it sitting. No battery. Interior is flawless except for a rip in the driver side seat. Also overall the outside of the car and the engine bay is very dirty. The band that cars with t-tops have, the vinyl is old and coming off but no rust underneath. What would be a good price to pay for this car?