64 Valiant 440 build

Wow! What a killer build. You sure took on a lot of work. I appreciate you posting so many pictures & details. My project is a '64 Barracuda.
Headers seem to still be an issue (unless I missed it). Someone commented about a guy in Kingston that builds custom headers. If that is the same guy from the mid '80's, use him. His work is phenomenal. My Dad built a '66 Valiant years ago with a '69 440. Awesome straightline car, fast as hell.
Headers built by Kingston guy, but Dad provided initial design. Tunes bent up & forward towards front of engine, then an up switchback bend back towards firewall, then down. True duel exhaust.