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I am looking for the easiest replacement muffler for an 05. MBRP I believe makes a kit just to replace the muffler. Are there any others? Where is the cheapest place to buy them?
I just bought and installed the MBRP muffler replacement kit from Diesel Performance Parts and I am very happy with it. Easy to install and sounds great. Just unbolt the stock muffler between the cat and stock tailpipe and bolt in the MBRP kit using the factory hangers. If you have a short bed you may need to trim the stock tailpipe a few inches. I am very happy with the sound and reduction in EGT's.
In my research I couldn't come up with any other easy options at that price. Don't need to spend the money on a cat back system on the 4. 5+ because they already have 4" front to back. The only other "muffler replacement" kit I found that factored in the factory offset was for an aeroturbine muffler, but that ran about $300 shipped, almost double the MBRP kit.
The MBRP has the welded hangers and is the easiest to install, looks and sounds great. AFE has a TOM KAT Kit that is a bolt on as well and does real, very close to the price of the MBRP.