Not sure Dave but yes that is quite plethora of plastic
Note though you get the parts to build the early and later models. IE two tails and engines models.
307B equipped with Wright Cyclone GR-1820-G105A engines with two-speed supercharger for improved high altitude performance; seven cre
307B-1 Following military service, the C-75s were overhauled and updated with B-17G wings and tailplane, four Wright Cyclone GR-1820-G606 engines, and B-29-type electronics.