When I had studio space, used a Linhof Heavy Duty tripod with geared center post, 90 degree "Downtilt Head RZO" (Bob, I think that's what the part is called), another horizontal geared center post, another 90 Degree adapter, and then finally a Linhof De Luxe Professional Pan Head III. The horizontal geared post was counterweighted, just in case, to prevent the camera end from tilting over. Not as nice as a dedicated studio stand but already had all the parts to put it together and it just worked.