With all the work you've put into you truck, you should be concerned about the quality of paint. One thing always to remember. YOU GET WHAT YOU PAY FOR!!!!! The $350.00 plus paint is a normal price for quality paint. Your body shop is probably going to us a Base Coat/ Clear Coat method which is the only way to go.
Acrylic Enamel is what Earl Schibe and Maaco uses. If you want your truck to look like one of their paint jobs in 6 months, use the Acrylic enamel. If you want it to look good for the life time of the truck, go with your body Shop.
Frank Cox
Cox Custom Cars
http://www.myspace.com/495542216