The Stovebolt Site Forums The Shop Area General Truck Talk muffler, which one is correct

You might want to take a look at Walker #21028. This is what I used about a year ago after researching a close match to the original on my '57 with a 235. Straight through, 5" diameter, 21" muffler length, 25 3/4" total length with inlet/outlet pipes, 2" inlet diameter, 1 7/8"outlet diameter. Available at many auto parts stores, but I bought mine at Rockauto.com because they had a rebate available from Walker that brought the final price of the muffler down to about $15. Perfect fit with the rest of the pipes and hardware which are all stock.

Matt