I have used everything from straight chassis enamel reduced with thinner to a lacquer based product. I feel the SEMS trim black in the quart can looks very close to the original but I like the durability of a urethane product. I use STANDOX rally black. It looks correct and outstanding durability. The product is mixed 3:1 with hardener and very easy to spray. The product can also be mixed with a gloss black to get a more shiny look used on other parts of the car like brackets, etc..