The headers are 2 1/8" stepped to 2 1/4" I provided the drawing for the flanges to the guys at Stainlessheaders.com and they sold me a very nice setup for i think it was 1100.00 all stainless including merged collectors.

Thank you for the compliment it was a labor of love for sure it fought us from the word go I guess it was mad I neglected it for so long LOL but she happy now! The car has been a race car it entire life ans in the family a very long time.... MY PARENTS DATED IN IT and NO as far as I know i was not conceived in it..... I HOPE LOL