Header flanges / custom headers


New Member
Dec 31, 2022
Does anyone know of a manufacter of headers that will fit a 87 grand national?

I found these from advance adaptors, but I believe they are for the older Fireball engines.

I also found these, but I think its the same deal. The gaskets for odd fire and even fire engines are unique part numbers, I believe the port is higher on the later even fire engines?

Anyone know for sure?
Those Advance Adapters header flanges won't work on later high port heads. I tried some for a custom build and they won't work. I finally tig welded the bottom of the port openings and ground the port openings higher for future use.