Custom.

Price, I dunno, my buddies girlfriend's dad owns a muffler shop. When I had my Integra he put 2.25 mandrel bent piping to an OBX muffler. (full cat back) Sound great, nice and deep, performance? Ehhh....what do you expect from an exhaust. I did feel a LITTLE extra in the highend but for $150 (I bought the muffler off eBay for $70) it was a deal.

Without hookups, the same setup should cost around $300. That's what MoFo would do.