Inliners International Forums General Discussion Engines Looking for exhaust recommendation for dual to single

XXL, I have a 292 with Stovebolt cast headers. Those have a 2.5 inch exit. The folks at Flowmasters suggested to taper the 2.5 inches to 2 inches, use a y to join the two pipes into a single 2.5 pipe into the muffler and 2.5 out the back. I suggest you give them a call and see what they say about your setup. S