When I brought my brand new Scrambler home in 1982, I had the Scrambler lettering off within hours. Never liked the hood lettering. However, if I get the hood in just the right light, I can still see the almost imperceptibly darker paint originally covered by the decals. The only letter I could reliably measure this morning was the B.
I get 3 3/8" as the height. It apparently sat on the Jeep dealer's lot in Monticello, UT., long enough to slightly fade the paint on the hood. That probably didn't have to be long with 1982 paint and the intensity of the sun at 7000' altitude.