I have had duals and stacks on a few old 2nd gen Cummins.
Not sure if you are wanting to delete your truck or not. However there are plenty of people that make and sell a DPF back dual kit. A friend of mine just installed one. he did a delete pipe a year or so ago when he deleted.
He found a good price on a dual kit and put it on. it hooked up right at the connection above the axle/tail pipe section. the sound will not really be anything if the truck is stock.
It will sound good deleted. but his sounds crazy with a whistle tune out of duals.
Its different tho cause there are a lot of harmonics coming out of it. he finally put 2 small straight thru design resonators on his truck and it sounds good.
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