94Z28WP

I had it installed for $35 at a muffler shop... Paid $52 shipped for it on ebay... Here's the part number and specs link: 94109 ... It knocked the db's up a couple notches... Also made the exhaust more throaty sounding... Louder than it was before... For me, definately worth the money... I'm posting this mostly for people doing searches later on looking for opinions on catalytic converters.