Headers for 73 Duster with 451

All headers for these cars should have seperate tubes and slip on collectors.

If I was stuck and needed to use a TTI or some other header, the FIRST thing I would do is suck it up and purchase slip on collectors. Then I cut the weld on stupid collectors off. Then I'd split the flanges and get the headers on.

It it beyond ignorant to use weld on collectors. Beyond ignorant. Try getting that through the thick heads at TTI.