you can always pick up some 6.1 exhaust manifolds and bolt it right up. will need a little work to connect the midpipes to the stock r/t exhaust aside from that and a tune i dont see where it wouldn't be a bolt on mod.
You can pickup take off stock SRT8 exhausts for just about nothing. Might as well let that bad boy breath downstream if you're going blown. I'm headed in that direction myself. Have the SRT8 shorties and mids, and I'm going catless mids for events and SRT8 sized catback. I'm hitting limitations so I want to see what it will do with less back pressure.