Recently, I bought a set of headers that are suppose to fit my '64 Galaxie. Not in a box but open. Seller couldn't remember the brand. They are 4 tube, never had exhaust fired thru, are painted a nice gray color. There are numbers on each flange, but I can't seem to find them on the internet. Numbers are L213424 9 91 (left) and R213424 9 91 (right). Can anyone id the manufacturer for me?? Thanks.

or do you just want to know the brand?

They have the dual bolt pattern but I haven't tried them yet. I don't want the car down for any time right now but just wanted to try to verify the application

Which would be obvious, so my guess is they are not Hookers.