this is stuff i've polished under the hood of my truck. some of it i polished from the original cast finish like the brake and clutch master cylinders, the intake plenum, throttle body, and the distributor cover. the radiator wasn't cast, but i polished it as well. let me know what you think, and check out my page on my car club's website http://www.undefinedcustoms.com/memberrides/lowlife.html