I have duals on my 66 Cuda, and here's what I did to make it happen. First, the trans crossmember on the early A bodies is only cut out on the drivers side for the exhaust to pass through, so you have 2 choices here. First, Laysons sells a crossmember that has been modified on the passenger side to allow for the second pipe to pass through. You have to send them your crossmember as a core, and the modified one is about $135.00. Or you can remove yours and have a metal fabricator do the job for you. Basically you cut along the bottom flange and bend that back, take a hole saw and cut a half round hole just like the drivers side, then bend the bottom flange back in and around your half moon and weld it back in place. Then reinstall it and run your pipes. For my pipes, I have the Spitfire headers, but stock manifolds are the same. My muffler guy made a set of intermediate pipes that go from the manifold flanges and meet just past the pan of the transmission. Here he put a couple of bell flanges on them continued the tailpipes back through the cutouts in the crossmember to the mufflers and then over the rear as usual. He used an intermediate pipe in case I had to do any work under the car that needed the exhaust removed, I could just drop the intermediate pipe and do the work unobstructed. At the back I used chrome tips from a 70-72 Dart and hangars that are correct for 67 GTX. I will post some pictures of the set-up tomorrow, as my car is at my shop. This set-up on my car really perked up the motor, as the original drivers manifold is so restrictive that it barely flows and really restricts the motor. I'll post pics tomorrow. Geof
I brought the Dynomax Super Turbo mufflers with me.
