I put on the Dynatech 1 5/8 headers and they were a perfect fit. I don't have a/c but I do have power steering. They installed with no issues at all. I added on 2.5 pipes to flowmasters 40 series followed by 2.25 muffler to tips. The combo worked well for a 350.
1969 Camaro SS350, original motor/12 bolt/interior and build sheet in Fathom Green.