you've got pretty unusual dimensions, but for track racing, you're in luck. very long and very low is not uncommon in track frame geo - though this is largely designed around accommodating fairly tradtional aerobar setups (low) on large frames. A Dolan DF3, for example, has a 12cm headtube in a 57 frame size (I wrote that before I finished reading your post). There are certainly others, but I don't know them off the top of my head. Doubtless a few other people on here do.
You won't find a BB30 track frameset, full stop, unless you get one custom made.
If you wanted to get wild you could also look at modifying a road TT frame that has a very short headtube. That's not all that weird on the track (or rather, it's not common, but neither is it unusual).
I expect that you'll be able to find something that works - though you might need flexibility on your stack dimensions. Fortunately for you there is a wide variety of very deep handlebars that can still put your torso where you're used to having it.