I think it will be hard to find one because selling kits ripped from VSTs would cause legal issues and sampling kits just to sell them to 2Box users would not be very profitable. Check
this sticky thread from the software section that discusses Toontrack's view of the matter.
On the other hand, I don't think buying a full drum VST and some extensions + SDSE is that big of an investment in the long run. People are also selling VSTs second-hand and you might find them at quite decent prices.
