My dealer had a beautiful '88 244 - I asked them how much they wanted for it - considering the car's condition, the price was fair. The only thing that separated it from new was poor paint on top.

I went back to buy it and it was gone. The dealership owner had decided to add it to his collection.

The next time I visited, the car was in the showroom looking beautiful.

They had painted it down to the side trim.

You might consider that route.

BTW - I was going to opine that the only way to save the metallic paint was to apply paint remover, scrape it off and put it in a clean sealable container!

As another post mentioned careful sanding and polishing. My red '96 855R had clear coat on the hood, bumper, front fenders, left rear quarter and tailgate, the rest was original paint???

After driving it for 11 years, I polished it with Dupont New Car Polish (it is a very mild polish used on new cars) and waxed it - you could not tell the difference between the parts.

You can now buy some VERY fine sand paper, or for aggressive polishing, use paper and polish instead of rags.