i have a show truck and i currently have the frame painted with por15. it has faded over time and i was wondering if i could go over it with the Extreme Chassis Black High Gloss? also how glossy is this product, and does it loose its shine overtime? i just don’t want to cause the por15 to lift. also i plan to paint the underside of my floor boards with the gray rust encapsulator. does this product have to be top coated? if so do you have a gray chassis paint? i’m looking forward to trying your products, i painted my exhaust with your hi-temp paint and i’m extremely pleased with the results. thats why i want to try more of your products.