3inch Exhaust system BigBlockMopar 15 years ago Got an order from Summit containing a bunch of 3″ tubes in various shapes. This will be a complete header to tailpipe to be mounted behind the blowermotor I’m working on. Share this: Email a link to a friend (Opens in new window) Email Share on Telegram (Opens in new window) Telegram Open exhaust vs Dynomax Exhaust mufflers sound level differenceDateApril 30, 2018In relation to360 SmallBlock MoparNew Exhaustsystem – Dougs Headers, X-pipe and Borla Pro-XS mufflersDateOctober 3, 2016In relation to1973 Dodge DartDodge Dart DynoDay #3DateAugust 30, 2017In relation to1973 Dodge Dart