Les Dunham is from my home town of Boonton, and he did a lot of work back in the 60's with Barris.
http://dunhamcoach.com/gallery.htm
The pictures of The Scorpion and The Agent were taken in my high school parking lot. Wasn't a fan of his pimp-mobiles, but you could always walk past his shop and see what he was working on. Les used to say that The Munster's Grampa coffin hot rod was made from many of his drawings