3.5" y pipe
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Adding this:
Ordered up some random pipe pieces and clamps.

In this picture you can see the Howe racing merge, 3.5 to 5 inch, and my old 4" bullet muffler I plan on reinstalling.

This merge obviously was too big so I ended up cutting it back about 3 inches so it would mate up with 4 inch pipe.

Here is the completed Y pipe and merge.

Had it coated with high temp powder.












