I raced the 69 Barracuda before I started the 6.1 change and I gave $1700 (Dawson Headers) for the headers then they were special made and had to send them back they hit the steering so that tells me doesn't matter what you pay for something. HaHa
The headers were the one for the after market K-member, I used the K-Member from Denny Hemi. But that didn't have anything to do with the header hitting the transmission pan, and you could not move the motor any more to clear.
Something thought you mite wanted to know. Bought a set of TTI headers for my 6.1 in my 69 Barracuda had to notch the frame to clear the header pipe on the passenger side. Also the collector hit the pan on the transmission (545RFE). So when they say there direct fit you want to question them...