Youtube.com has thousands of examples of different setups. Just type in mustang exhaust or mustang flowmaster etc.... here is mine. Pypes long tubes and nothing else!!! LOL Loud as hell!!! Its a big warehouse so there was a lot of echo too.....LOL.... Getting some custom fabbed pipes put on tomorrow.....gonna be nice whens its complete. Pypes Long tubes, h pipe, high flow cats, spin tech superprostreet mufflers.
Depends on how deep your pockets are. Long tube headers, with an X pipe, catted or not, depending on if you have to pass vehicle emissions. And just about any quality axle back. Of course, some swap their exhaust over just for the yearly inspection or they "know" someone who will pass them.