Doc's, Monza's, Daddy Daves, and Murder Nova all started out as a production car. The chassis' are more or less the same from the firewall back. DD's and MN's cars have "stock" type front ends on them. Daves car uses a bolt in front, and the new Murder Nova has just enough of the front frame rail to hang stock type suspension parts on it. These cars also have stock outer demensions, but make no mistake about it, they are basically the same as Chief's and Lutz's ProMods.