"Save yourself the work. Sell the 64, bank the cash, and shop for a solid vert. Don't just look local, have a good car shipped to you from anywhere in the US (or Canada) for about $1000.
I will disagree with Eddie a little bit,
"Convertible will always be worth more than a hardtop"
His car won't be worth more, it will be worth less. It will be a 64 coupe VIN with a vert conversion.
Two doors, four doors, wagons, and ragtops.