I'll tell ya' this, finding a 928, or any car for that matter that hasn't had any previous paintwork for one reason or another, is like finding a needle in a haystack. As long as it's a used car, it's next to impossible. And yes, this goes for the 15K 928's as well. Oh, and also regardless of what the original owner tells you too!
I'm sorry to hear you've got this new disease. It's gonna take alot of the fun out of the game for you now, seeing as how nearly 99.75% of them are not 100% perfect, nor 100% original paint either.
I guess finding the paintwork now becomes the new challenge. Adds a whole new dimension to the game, along with alot of disappointment as well.
Todd