These C body mufflers come in various lengths and pipe sizes. Inlet sizes are available in 2.25" I.D. and 2.50" I.D. Outlet available sizes are 2” or 2.25” . Please confirm what is correct for the replacement size and order from the options menu. If you are not sure what to order or you do not see the option needed please call us for assistance. Our C body mufflers are of the three tube and baffle design that are fully aluminized for long life service.