These are a block hugger type header for a small block Ford. I was going to use them in my 66 with my new 351W but they didn't work in it. I never ran them and have them painted with black heat paint. The only thing I did was notch the collecor at the end a bit to try and clear my frame but it wasn't enough (this does not harm the header at all to cause leaks or such).
I bought them for $155 bucks from Southern Rod and Custom.
Make an offer!