I got a call today from the guy working on my Challenger convertible. He got an invoice from the place restoring my AC components he needs me to contact to pay, and also wanted me to order a few parts he needs. The place is Classic Auto Air in Tampa FL. I needed to buy a new AC heater core, and found Rock Auto carries Spectra for $55 ($60 after 5% discount and shipping), and I needed a heater box seal and gasket rebuild kit, that was $99+ 8 shipping from DMT. I still need to get a Evaporator and Classic Auto air has those, for $250.
When all is said and done, I think I will probably end up with around $2500 in new parts, restoring existing parts, and labor, to get my AC back on the car.