67 and up summit 2 1/2" dual exhaust on 63 dart

Has anyone tried using the summit dual exhaust kit for 67 up on an early A? I would be ok with slight mods needed. I have a 360 with spitfire headers and a modified trans crossmember for duals. The exhaust I have now is somewhat "butchered" and I want to try and keep it within that price range. I will probably be switching out the spitfires for dougs or TTI at the same time.