https://jbaspeedshop.com/i-22729264-67-72-gto-326-455-long-tube-raw-steel.html
Doug's Long Tube Header 67-72 GTO 326-455 1 3/4" Primary 3" Collector Raw Steel D590-R
Doug's Long Tube Header 67-72 GTO 326-455 1 3/4" Primary 3" Collector Raw Steel D590-R