Which mufflers?

Rick , you know what the Thrush welded sounds like cause that`s what I have on my Dustrag . I also have a set of Thrush turbo mufflers that I had put on my customers Mustang and he felt they were too loud for his tastes . If you want to try them out , we can slip them on to see. They are 2 inch which I believe is what you need . BTW , I might be getting a 72 Duster 11 second drag car with 360 next week for really cheap !