do you mean a real quick fill for endurance racing or a trim piece. for the longer enduros this year i am changing mine to quick connect race fill. otherwise i will lose the 2 and 3 hour races in the pits.
and then get them painted, or powdercoated. Pro-Fit does that for you at a price. Depending on the condition of your paint the powdercoat will be fine. But as the paint gets old it'll wear differently. They have models that fit the Focus perfectly. :30 minute install time if you know what you are doing.
They aren't worth the money though. To get it so it looks nice you may spend $300+