1966 Dart 383 Exhaust Manifolds

Hello, new to this site. I have a 1966 Dart 4dr, Slant 6, 3 on the column. Engine is tired and smokey. I have two 383 engines sitting in the garage and have thought about rebuilding one pretty close to stock with a modern cam, something with a smooth idle as this car is just a Family cruiser that we like to cram into and cruise the county roads in. I have not been able to find any good answers on what to do about exhaust headers/manifolds/ shorty headers that would fit this application. I don't really want to do headers on this car but will if that is the only option. I plan to leave the car a 3 on the column.