What sort of Muffler do you want Jimmy?
I'm getting a Holden V8 one for a friend tomorrow (2nd hand) which are a bit like a turboflow etc. 2" inlet and outlet, all you need to do is mount them upside down so you cant see the holden sign! The v8's run a pair in the back of them so I could get both if you wanted one? It would probably be free.