I have a brand new Voodoo Wanga, can run SS and gears, size not exactly as you wanted but measurements below, so you can see for yourself.
Brand new never Used or Built up.
From centre of BB to Centre of top tube 14.5"
From centre of BB to top of seat tube 17"
From centre of head tube to centre of seat tube 21' 3/4" (along the toptube)
It's on ebay for £145 + delivery
But I'd take £125 delivered for it (on here)
I've got loads of pics
Now that would be ideal if it was my size but its just too small
Cheers for the effort though