What are you after, a bolt on solution or more of a DIY adventure? For a complete ready to fit package AFAIK your options are pretty much limited to Jenvey DTH bodies from Bill. There is a bit more flexibility available if you looked into sourcing a DCOE carb manifold, and some DCOE bodies. Past that your into the realms of secondhand bike/car bodies and having to fab up your own manifold etc.
i got a dcoe manifold already so i been lookin at jenvey/alpha/webcon not really fussed about the diy route just the easiest