308 QV Exhaust recommendations

I made my own test pipes, pretty simple really. I just built square frames around the catalytic converters with 1x6 pine, marked the flanges and drilled holes. I think I got four flanges and about 4 feet of exhaust pipe from Summit. The flanges were flat so I had to cut the bevels for the gaskets into the inner diameters, that was the hardest part of the whole job. After that I just bolted the new flanges to the pine, ran the pipe through and welded. They fit perfect. Sorry I can't find the pictures but I posted a video at the end of in my "Air in the cooling system thread" - here's a link. It sounds a bit louder but not by much.

 

Where can a guy find a 1978 GTB/USA factory muffler? I remember seeing lots of them around but no longer. I got too close to mine while chewing on a ciger.
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