Any body know where i can find a good set of pipes header back that will work with the Gt valance on a 1965? Im gonna be using tri -y headers off a V8 289. Must be mandrel bent tubing, no hydrualic bends. I'd like to be able to use delta flow 40 flows. Thanks - Roger

 

I was planning a similar setup for my 65. I haven't tried it yet, but I'm pretty sure you can adjust the hangers on most any good catback to get them to come through the GT valence holes vs beneath a stock valence. I was looking at buying a few polished slashcut tips to attach to the end of the pipes to make it look better.

 

i would check all the major parts places

NPD, Virginia Mustangs, Glaziers mustang Barn, and there ae a host of others. I believe NPD probably sells a nice performance exhaust kit that will work with your GT valance.