I have a '97 4.0 and this is my setup.
Headman Headers.
3" pipe from header collectors into a flowmaster 40.
Flowmaster 40 single 3" in dual 2.5" out
2.5" pipeout to 3.5" stainless tips.
check out my vid.
I challenge any one in the worl to beat that sound from a ranger V6....!
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