The Z proto is essentially the same size as the Zupra.
https://www.nissanzclub.com/forum/th...ge-2#post-3355
Z Proto
Length 172.5 inches
Width 72.8 inches
Height 51.6 inches
Wheelbase ??? (370z @ 100.4 inches)
Supra
Length 172.5 in.
Width 73.0 in.
Height 50.9 in.
Wheelbase 97.2 in.