The Dragon ColdFire board is an add-on, currently only for A1200 computers. AFAIK, no one has one of these except for the people at Elbox, so there aren't any publicly available benchmarks. It should be pretty fast though. At 266MHz, the V4e ColdFire is rated at 410 MIPs which is several times what the fastest 060s are rated at. There will be some overhead though, because the ColdFire is missing some instructions and addressing modes that have to be emulated. Still should be noticably faster though.
I'm a little concerned this product won't ever see the light of day though. They keep pushing back the release date. Recently they said they would be out as soon as the production version of he MCF5475 was out, but that happened a while ago and still no word on the Elbox site.