Of course a C-97 is not a Stratocruiser, but we'll let that pass. Several survive but it is probably correct to say that only two are airworthy - the BAHS one and a water bomber at Greybull WY. The last real Strat was inexcusably broken up at Tucson sometime in the 1980s.
The Miami operator was Agro Air (Dom. Rep). There was still one of their C-97s derelict at MIA a couple years ago.