Not my car but a buddy has the Summit Racing G9141 headers on his Cuda with a 440. They seem to work fine for him.
He is running the Borgeson power steering and a IDIDIT tilt-steering column.
Thanks for reply and pictures,they look great,looks like plugs are easy to get at,it seems b-bodys run into afew probs but e bodys are ok with little mods required.
I bought a set of headers of my buddy that had them in his 70' Challenger. I installed them in my 70' Roached Runner. I didn't have to ding a single tube. They fit perfectly. Unfortunately, there is no brand name on them anywhere. Best pair of fitting headers I have ever had