I'm a little confused on exhaust systems. I read that MAC make more power than bassani. Is this true? What are chambered mufflers? Is the MAC prochamber their catback exhaust? Will MAC headers and a mac x pipe sound good with a bassani catback or should I go bassani for the entire exhaust system? Which would make more power? On the bassani website it has their regualr systems and b/x systems. Whats the difference and which is better as well as which makes more power?