Ive ordered some brand new Hilux calipers and want to paint them, probably in a gun metal grey. They are yellow zinc plated, but this coating, while nice doesnt last well in use on brake parts, and besides i think it would look odd behind the wheels on a purple car! Ive got some high temperature paint already, but i cant seem to find any definitive answer on wether to use a primer first, and wether said primer should also be high temperature. Most caliper 'kits' you can buy dont seem to use a primer, but plenty of manufacturers seem to make one nonetheless to compliment the top coat! Would you also lacquer them as well, as i have an unused can of that from years back, which was intended for engine ancillaries?