When it came time for paint I was going to shoot the car in single stage urethane. Well that all changed when I read the article in Hot Rod magazine in the Winter of 2007 Paint and body issue. "PAINT YOUR CAR WITH A ROLLER FOR $98" Now I have been painting for over 30 years and seen every gimmick and cheap paint job known to man. Well I bought the issue being they used a 62 Falcon as there test car. After reading the article and researching the process for over a year I finally decided to try it after a buddy of mine bet me I couldn't make it look at least as good as a 70's factory enamel paint job. There is a forum called http://rolledon.forummotion.com that was full of guys that gave there cars roller paint jobs. Some amazing work. I used Rustoleum marine paint with enamel reducer, hardener and some Penetrol. I started with just the rear quarters and trunk area because that had the worst of the rust issues. My thinking was if this doesn't work then I would strip it and shoot it in urethane. I would only be out some time and one quart of paint. After 10 coats of paint, wet sanding between every 2 coats the results were beyond my expectations. As far as durability it's been 10 years and the paint still looks amazing, it's rock hard and the stone chip blend like a dream. For a $200 investment and a lot of wet sanding it was well worth the work. It blows peoples minds when I tell them the paint was rolled on. At the bottom of the page you will find the link to the original Hot Rod article.
I used Rustoleum filler primer in a quart can applied with a roller and reduced with some lacquer thinner. Block sanded like butter and filled great. For the door jams, back side of the trunk lid and tight areas I used the marine paint and shot that through a cheap Harbor Freight touch up gun. Flowed out great.