I currently restoring the interior of 70 Chevelle convertible... I have the original seatbelts and buckles that I would like to make new again rather purchasing repros.. I know how to restore the color of the nylon fabric belt but the plastic black GM buckle is where I have the dilemma.. Overall the buckle is in good condition (no cracks) just faded with some minor scratches.. With that said. I'm assuming I can wet sand the plastic buckle (800 , 1500 , 2000, 4000) and use Meg Plastic X to bring out the color ? I don't have any spare buckles so want to get it right the first time.. I'm assuming this is like cleaning a headlight lens.. Any advise on the what to use or the best approach? Thanks in advanceFeed back please