Ol' Blue's magnum swap

Im gonna be doing the same thing in my 63 come spring and this helped alot. Couple of questions, where did buy the headers from and are you using a V8 center link. Also which intake manifold it that.
Hello I am also doing a magnum swap in my 65 Dart what did you use for the accelerator and downshift linkage. I know I have to get this somewhere, but can you tell me what I need to get? cable accelerator ?

Thank you