Recomend an exhaust

I ve got a 73 Dart Sport 340 auto 3.55 posi 38k mile stock original car. This car was sitting in a guys yard since 1977. I picked it up last spring and did brake system,cooling syetem,fuel system ect and put about a 1000 miles on it. It has parts of an original exhaust under it but it needs to be replaced. I want to get a TTI exhaust and possibly headers. I want it to have a nice rumble to it but not be annoying to drive on the highway ect. So question is headers yes or no? Worth the extra cost on a stock engine? What mufflers Super turbo,flowmaster, ultra flow? magna flow? TTI or something else??