what is the best product to clear coat highly polished aluminum. i have a 2004 mustang mach1 and i have polished the valve covers the shaker scoop the intake plentium , assorted other brackets and underhood items to give it that plated chrome look. iwant a clear that will not allow the aluminum to fade or give it a dull look after it is cleared. i had a few items clearcoated with a powdercoat clearcoat. this does not work. all of the gloss is gone and it defeats my purpose. what do u suggest. thank you mike hicks