Complex sentence: He's credited with introducing Steve McQueen to Ferraris, and in the early 1960s owned a Ferrari 250 GT Lusso and a Ferrari 250 GT Spyder California SWB.
Split into simpler sentences: He's credited with turning Steve McQueen on to Ferraris, and in the early 1960s owned two at that time. One was a Ferrari 250 GT Lusso, the other the Ferrari 250 GT Spyder California SWB.