did not read all of this thread but I just did my 66 gmc with PPG Omni base coat- clear coat....the paint was not that expensive.....I used a polyurethane clear and with the hardner it was about $100.00 per gallon. The base coat color was $65.00 per gallon and with the solvent ( 45.00 gal) that makes 2 gallons of paint. It worked great still had to to the prep work correctly, etch primer, sanding primer, sealer them base coat then clear coat......its almost finished
http://kieth.smugmug.com/Trucks/66-G..._Qmj3NL4-X2-LB