Hi
Land rover only built 811 NADA land rovers, the term nada seems to get applied in error to to any land rover that came to north America.
A true NADA came only in 109 inch wheelbase station wagons powered by a 2.6L 6 cylinder petrol engine with a "Weslake" cylinder head, 8.8:1 compression ratio, 2 inch SU carb, 2 inch exhaust and produced about 125 HP. NADAs also had wider front brake drums (to handle all the power), a remote power brake booster and a vinyl dash board as well as a few other vinyl vanity pieces on the dash. They had a C-42 generator (30 amps) and heated windscreens and were produced from 1966 to 1969, with all of them sharing the same 1967 specifications (like headlights in the grill and wide sills.
https://www.lrfaq.org/Series/FAQ.S.chassis_numbering.343.html
Victor.
Yes and no.
As I mentioned before the 6-cylinder LWB Station Wagon built in 1967 was the only one that had the nomenclature 'N.A.D.A.' attached to its name.
As you can see within the pics attached earlier, 'NADA' and 'North America Spec' are used to indicate the litany of requirements for the North American market, mainly the US. The earliest I found were the 2 items required in the '63 brochure, but the terms 'NADA' and 'North America Spec' are not mentioned, instead, 'Mandatory Accessories U.S.A.' is used. So, every Rover from at least late 1965 and 1966 would be considered NADA.
You point out that "...the term nada seems to get applied in error to to any land rover that came to north America" - I fully agree, to an extent.
Once those items required for importation into North America became codified, and known as the 'North America Spec' and 'NADA', all of the Rovers imported afterwards could be called "NADA Rovers" because they meet those requirements and separates them from the UK home market and the rest of the world markets.
My '63 doesn't have all of those codified requirements so, IMHO, Grover isn't a NADA Rover, but an 'Export Rover'. Yet I appear to be about the only North American who believes this way; as you point out everyone else seems to think ALL Rovers imported to North America are NADA. This is one reason I always ask "what year" when someone says they have a NADA Rover.
IMHO - there is a very obvious item that denotes non-NADA Rovers and NADA Rovers in North America, it also tends to mark a difference between the early IIa and late IIa - the headlights.