Options for an AAR type exhaust on Duster

I did the same thing on a 73. I went with the Spin Tech split case mufflers exiting just ahead of the rear tire, HATE IT way to loud, most manufactures only produce the split cases as a racing muffler and they are really loud.
I just pulled it off and purchased mufflers and tips without tangs from Accurate LTD ( I have this system on my AAR) I love it I can now hold a conversation or listen to the radio. If I want loud I just open the electric cutouts.
Do it right once !