Awesome, Thanks for the info. The Tourist Trophy stuff is crap except for the 2 front pipes so I am going to weld up a 2 inlet 2 outlet silencer paired with an Abarth BJ8 tail pipe. Hopefully ending up with something close to BJ7 sound. My plan is box style with 2 perforated pipes wrapped with stainless wool mat and packed with stainless wool fiber.