1977 Ford Mustang ll

Selling my 1977 mustang so I can get down payment on semi tuck. The car is in very good condition body wise. No rust at all (except little on roof you can see in photo.) The engine is a built 302 that runs very strong. The transmission is a 4 speed manual that has problems. My son took it to shop class to rebuild and it came back with only reverse. But many parts in trans are new. This is a rare car in this condition, ith a nice paint job and fixed transmission it would be worth many thousand dollars. I need $3500 for my down payment so that's where bidding starts. Car is currently primered gray. Must be towed due to transmission. I want to addthat I think the instrument cluster is not original therefore I have no idea how many actual mils are on car. I was told about 500 miles are on rebuilt engine, ut I am not positive.Thanks.