I built headers for my 216 back in the early '50's, and am building headers for my 292 now. Just get flanges cut out, you can do it yourself with a cutting torch, and start welding, make measurements often and make sure you clear everything. I like thick flanges, I used 3/8" plate for mine. The sound of a 6 with headers is GREAT!! I can hardly wait to hear my 292 when I finish them up.
