67 Barracuda Headers

I am looking to put a set of headers on my 67 Barracuda.
340 engine 450 HP, power steering, A/C, power brakes with 727 trans.
Which header fits the best w/o a lose in performance? I have read that the fit around the starter can be a problem. I would like a set with ball end connectors.
Has anyone have a real world experience with Tri-Y headers?
Thanks