Header ID search

[shelbydoug]

I took a set of used long tube 67-69 ish 428 Mustang headers in a trade.

1-3/4" primaries. 3" 3 bolt collectors.


I thought that they were Hookers but they are only marked R 522  1 and L 522 1. Left and right.

I did the Google search routine but I can't find any cross references. They happen to fit rather well though.

Does the part number sound familiar to any of you?



I'm suspecting that they may be a set of Gratiot Auto Supplies, Comp Plus headers? Those have a distinctive shape around the clutch mechanisms I haven't seen on other manufacturers but their listings are gone long before personal computers even appeared.