The shapes are similar but the bolts won't line up (think along the lines of a 15" tire on a 14" rim). Go to muffler shop to have them do an exhaust system for you. Be sure they mandrel bend and not crush bend the pipes. It may take a while to find a shop that does that, but it'll pay off in the end.

Back in the day, Flowmaster used to make a muffler that was black with a modest 2" chrome tip. It looked good, but was as loud as any other Flowmaster.