When I had one of our dually's painted a few years back the shop that did the work claimed that the rear fenders had to be sprayed separate (in time) from the body. The rear fenders are fabricated from a cheap polyester resin/chopped glass combination that has a strong thermal coefficent of expansion. That using a standard catalyzed paint would craze with age. He said he would add an agent to the paint which would make the paint on the fenders remain somewhat elastic with age.

Question to the paint pros is : Was smoke being blown up my butt by this painter, or is this true?

(Truck was an 1978 Chevy CC dually, should be the same as 74ChevyDually's in this regard.)

Regards, Mark