i have to replace my heater core, factory ac, just wonder how difficult this is going to be. i need to get all the gaskets for it. where would be the best place to get this stuff.

 

Persoanlly, I use Glazier/Nolan Mustang Barn, but everybody has this stuff. You'll need a core, and heater seal kit, to renew the blend doors seals, etc. You'll want to check all the vacuum motors, etc., too.

The hard part is taking the dash out to do this. Then, of course, you have to remove the unit from the car.