ok i just bought a 1994 silverado and i want to install some headers and some exhaust. My plans are to put true duals, two flowmaster 40's and some headers but the headers dont know what brand yet,,also it doesnt have any catalytic converters its the most important i DONT want it to make like a crakling sound when at wide open throttle i want it to make just a deep sound and not the crackling sound or will it be better to put high performance catalytic converters if yes what brand
