[AlbinoMonkeyRat]

^ to be more specific on the true dual....there would be 2 exhaust pipes running directly from headers to mufflers without combining. So on a 4 cylinder (or pretty much any common inline engine), with how most headers are manufactured, it is very uncommon to see true dual exhaust. however, on V6 and larger V* engines, true dual exhaust is quite easy and common (not from the factory though).


and to the original post: if it is properly hung, he is using the stock hangers, so that the exhaust has a little bit of flex. (if mine had flex to it, the muffler probably wouldn't have just fallen off). if the new muffler has the same size pipe, you shouldn't need any more modifications at this point. The stock cat is a decent flowing cat as it is, and should only be upgraded if you have more power flowing through, OR if your stock one is shot and you just want a nicer new cat on there. (check your state's laws for emissions regulations, as a high-flow cat may be restricted)

when I had my Borla ProXS (camaro style, dual out muffler) put in, it cost me $400 total for parts labor and taxes. They had to fab up some bent pipes, cut out a spot on the bumper cover for the new pipe, welding, and the tips. The tips were the bulk of the parts cost, being $75 each.