My truck is producing big sounds. When I have shown it to a mechanic, he told me to change the exhaust system. Its inner parts are rusted. I have found exhaust systems of MBRP and Flo-Pro in BC diesel https://www.bcdiesel.ca/en/exhaust-systems-tips-2, a spare parts store near to my place. My question is that which one would be more apt for my Ford 7.3L?