Here's my new muffler parts. Inside pipe is 321 stainless, .035", outside tube is
 .030 304 stainless. There is another 17" of inside tube for a total of 52" of inside
 tube.
 Brian Trubee

 Looks good Brian. The inside pipe is pretty thin but if it fails there is unlikely to
 be a loss of power.

 Paul Lamar

Brian,
Are you sure you have enough holes in the inner pipe?

Mark

Are you joking? :) It's open on the far end.

Paul Lamar
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