Southern Polyurethane Inc. They sell to some small suppliers but they also sell direct. Google them. Its 120ish for a gallon of primer and a gallon of activator. It mixes 1:1 so you have two sprayable gallons. More than enough to do every inch of the car.

No it does not thin with acetone. That is for rustoleme. I mix mine about 1/4 cup (paint cup) to the rest paint.

For my floors and firewall I didn't thin or spray the Rustoleum. I simply poured it out on the floor and then used rollers and brushes to cover the whole floor. Did just rollers on the firewall after cutting in all the edges with a brush. This gives a really good coating, and no overspray all over the rest the interior.
Attachment 17480

When spraying Rustoleum I thin it 50% acetone, and if you want to increase drying time add some Japan Drier. About an teaspoon to a quart will speed up drying time enough, but still allow plenty of time to spray. But if time is not an issue, the drier isn't neccessary.

Thanks for the tips guys. I think I'm going to save for the powder coating on the frame. I think it will look good. Progress has been very little as I'm still trying to fix the rust on the frame mounts. I have had other things come up that I have had to do. Hopefully be back at the camaro some more this week.