early A-BODY 1-5/8" x 1-3/4" SMALL BLOCK STEP HEADERS
You must have a lot of patience 65cuda340 .
If I were to go thru all that I'd contact headman hustler and has them custom make a pair of 1 3/4" fender wells for my built 273 with No Hassles .
I had a pair of 1 7/8" on my early 65 dart 402 stroker and they fit beautiful. just say n