Arthur Godfrey also owned a Gulfstream One, and this airplane was equipped with a Collins para visual display (PVD), and was approved for hand flown CATIIIA ops, at the time.
The Collins PVD was a proof of concept design, but it never caught on the the USA...of course, the UK used it to very good advantage first in the HS.121 Trident (as I recall) and then in the L1011.
Superb kit.