They look like Hooker #5303 take another look at the headflanges,Hookers are often stamped with part# there.
If it is,those are some of the best A-body smallblock raceheaders you will find.
Thank you, I agree that is what they look like. No amount of searching "Hooker small block adjustable headers" netted me those results last evening prior to my post. I think these were a great find, and located in Canada for once! Lol
