Phillipe
Wrong, for the Targa that setup must of been in 1965 GT39 it ran as a roadster. 1966 OK back to coupes.
Seriously, Minimetal the Gurney Bubble and other aids for taller drivers came after the design and they did occupy a small amount of roof space. The cars were still 40.5" and some tall drivers could get into them as some had lowered flat floors.
Regards Allan