This sounds logical to me, but is the single stage you get now the same as what they were using originally? A lot of these cars ( including mine) are metallic. So they used single stage metallic, yet many people recommend against it. I used it on the engine bay and it looked decent. Not trying to make a show car. Is there any reason todays single stage, even metalic would look any worse than the original? what happens if you sand/buff it? Also how does 'base' differ from 'single' stage? Could you sand the single stage and shoot clear over it?