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Old 07-13-2013, 12:58 PM   #15
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1979 24' Airstream Excella 24
Tipp City , Ohio
Join Date: Feb 2012
Posts: 503
I hope you can see the Walker schematic in the previous post. I used this info to find the part #'s for my 24' MH. I bought some of the parts from my local Advanced Auto and others from Rock They were all delivered in just a couple days. I used the upgraded mufflers. I thought they were stainless steel when I bought them but, now I am not really sure if they are. They worked great! I had to modify the pipe that runs past the generator. I simply cut the pipe in half and added an extension ( a piece of straight pipe and two couplings). At the front where they attach to the headers I simply cut the pipes short and used a simple header pipe collector adapter. The alignment was fine. I spent more time driving from muffler shop to muffler shop trying to get a price to have the work done than I spent doing the actual work in my driveway. I am not sure why you think a dual exhaust would not fit on your 20'. Hope thias helps! Greg

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