Darts First Test Drive.

340sFastback said
Mufflers is a tough one. A muffler that sounds great on one car sound horrible on another.

I love the Dynomax Ultra Flo on my Barracuda. So put some on my fox body and they sounded terrible. So swapped on Dynomax Super Turbos on the fox body which turned out great.

With 340 manifolds 2 1/4 outlet going into 2 1/2 TTI head pipes, I ran that combo once, something like a Dynomax Super Turbo should get rid of drone.
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the dynomax super turbos are weird. seem to drone bad with manifolds and not so much with headers in my experience. once aligned I'll drive it and see how it really is.

fox bodies originally had two different lengths to eliminate drone. I'm sure you know that with all the fox stuff you do.

I'm 2.5" from the manifold to the bumper with an X Pipe.