I wanted to add this picture of the NOS 68030RP25C I used. This little guy popped up in the States on eBay months ago. It's kind of nice to have one that isn't the typical re-badge so common for eBay. Not that there's anything wrong with those, 030's seem to run whatever clock you ask of them no-matter what's printed on the lid..
Still, this one is certainly a nice specimen.