My 1961 Cadillac Coupe DeVille, and I'm custom building my own set of stainless steel headers for the twin-turbo Big Block Chevy. The 540ci monster is going to breathe through 2-1/4 inch primary tubes, which will exit into a 3" billet stainless steel merge collector and then flow into Nelson Racing Engines Mirror Image turbos. This video is full of tricks, tips and tools that will help you build your own headers, too! Want more info on the stuff I used in this video?