I have a 98 3500 quad dually ,12 valve,auto,152,000 miles,MBRP 4 inch turbo back muffler delete pipe,5 inch tip,AIRAID intake,4:11 gears,injector pump turned up. Owned this truck since 2000 my second diesel ram, my first was a 95 straight cab dually i bought new and put it to work transporting...