Mikesbucketlistmack Posted October 16, 2013 Share Posted October 16, 2013 I'd like to replace the stock muffler and exhaust on my 1981 R 600 single axle dump (former state truck) with a 7 inch monster stack. First of all, will this make the truck too loud, and where's a good place to purchase this online ? Raney's Truck Parts has some but they are only reduced to a 5 inch inlet on the bottom and the pipe on my truck is only 4 inch. They don't have any 5 to 4 inch reducers, neither. Any suggestions, guys ? Quote Link to comment Share on other sites More sharing options...
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