Its a Good topic to review today once again Grumpy. Thinking of Tri-Y headers. Be nice to have another set For My T/A Tri Y design. Broden the Torque band on the street or at least try it. Experiment & Tune. HO Racing made them in the past for my TA with Round Port heads. Long gone headers. Very hard to find. Like to fab a set of my own In Eds Garage. Future date. Have My Big Tube Hooker Super Comps. Been a real good set of headers overall. Sure improvements can be made in collector design. Never had to smash a header tube. Just clear all.