Early A, 273, 340 manfolds dual exhaust.

On my 66 cuda with factory 273 manifolds I have a TTI “x” pipe dual system with automatic. I went with the 2-1/2” system complete and Mike at TTI asked for the manifold numbers and made the compete system for me. Cost like $800 shipped to my door. No converting, no bs - but if I had to do again - I would go 2”.
SN- I did have to modify my trans cross member to fit passenger side. Directions to do that we’re in the box also. 11AFA0E1-EF16-4ECF-B242-1DE6DEC970DA.jpeg