Hey Newbie, First get your vette on a lift.Remove both cats from the exhaust maniold.Get the cats on the ground.Make sure the exhaust is cool! Find yourself a stick of somesort about the size of a broom handle.You'll see inside the cats a honeycomb like substance. That I believe is called platinum cataylst. You need to break all that up and remove it from the converters Reinstall.No other changes need be made.O2 sensor ect. Hope I helped.