Dougs headers not Doug Thoroly's headers makes a great header for the '64-66 A body when using a small block. Access to plugs is good and it fits the compartment well. I don't run inner fenders. It does get a little tight around the 727 tranny. I installed them and used a long pry bar to tweek some extra space. I'll be wrapping the collectors for additional heat protection. You get more turning space with this brand than you can get with fenderwell headers. These headers are two piece. I just put together a '65 Dart with a roller cam 360. This set up is almost as loud as my 23T Altered some 20 years ago. Good Luck.