what is it about conversions specifically that you like?
i ask because a lot of people who aren't used to drooling and obsessing over bicycle frames often assume things that might not be true (for instance, lugs=old road bike, nude drop bars=track bike, etc).
i could be completely off base here, but spoken to someone in the past who thought they liked the way converted road bikes looked, but it was actually the lugs and classic frame paint/lettering that they were after, which is quite easy to find in a track frame.