I've been toying with the idea of cleaning up the outer wheel wells of my 300. I'm going to wire brush them ( grinder with a cup wire wheel) . I want to recreate the pebbly type of finish that is on there now. It was under coated from the factory which included the wheel wells. I looked at the spray on truck bed liner stuff in a rattle can and thought it might give me what I want. Anyone used this stuff before?