Help with exhaust manifolds for a 66 cuda

That's what I'm looking to do make my car a great cruiser to take out and enjoy. As I'm getting older I'm tired of all the dumb headaches from exactly what your talking about. I want my fish to be quick and have a nice get up and go and be able to know it's going to start and keep running. When the drive train is done it will push around 300 hp and that's good enough. My last car I had was a 75 dart sport that was more for the track and it was a pain in the butt because I was always working on trying to get the bugs out. My wife would say you work on the car more then you drive it.