You can purchase them through quite a few vendors ie: Summit Racing, Speedway Motors, Pertronix, Jegs, etc. Just type in Smithy mufflers and a host of websites will come up. Hope this helps.
Tim
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup 1964 Chevrolet C10 (Ol' Yella) (SOLD) 1958 Chevrolet Biscayne 2 door (SOLD) 1970 VW Beetle