Best (easiest) fitting headers 68 Cuda 318

It's not to bad of a job. We put those TTI headers in a 69 Dart with a floor shift auto. The floor shift was from an unknown A body so we weren't sure if that was part fitment issue or not. it was modified per instructions but still rubbed. So the support bracket was just bent up a bit but we did not cut it and reweld as we didn't think it would buy us enough room.
He also purchased the extension exhaust pipes so It ended up costing about 850.00 with shipping. He replaced old headers that were crushed to death under the steering linkage.