could i take a magnaflow ypipe and turn it around to come out of my 2.5" glasspack into two 2.25"tailpipes? Iheard a duster on youtube that belongs to a gentle man on here and loved the sound. I have a 87 D150 with a slant6 and love it. Iam 1 of 2 slant6 powered trucks in my area.The other truck has an automatic(yuck)tranny where I have the OD4SPD.

Dual tailpipes in back of a single headpipe/single muffler is just pointless weight and cost. It doesn't sound any different than a single tailpipe, and it doesn't offer any performance benefit. If you still want it anyway, just for looks, there's nothing stopping you doing what you ask about.

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