Hello everyone, recently I bought a 2003 Mazdaspeed Protege in sunburst yellow. It came with an aftermarket vibrant exhaust that drones like crazy, I wanted this car as a cool runabout so I want to fix it. Unfortunately I can't get my hands on a stock exhaust for a msp, someone told me it'd be ok to get a Protege 5 exhaust, it would fit up, but I'm concerned about back pressure hurting the engine. I'm not sure if there's an easy fix for this, but the steel wool in exhaust idea is not an option, are there any other ways to reduce volume and drone especially on the highway? Thanks.