40" Donaldson M085171 or a 40" Nelson 86127 Muffler
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40" Donaldson M085171 or a 40" Nelson 86127 Muffler
I am looking at buying a 40" Donaldson M085171 or a 40" Nelson 86127 Muffler for my truck. Which is the better muffler for the 2003-2004.0 trucks? Do they sound and flow the the same? What is the practical difference between these two muffler?
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