Engine Bay of my 1967 Dart GT "Home-Brewed"

Beautiful ride! I am attempting to assemble my 67GT (finally). I have installed a swap meet K member and a 440,727, and 8.75. I purchased it for $500 as an empty shell. Inner fenders cut out for fenderwells and quarters mutilated for slicks. I have been in the process of restoring the sheet metal to oem. Whose headers did you use and what can you tell me about the rest of the exhaust system? I can use all the advise you're willing to offer!