FYI, the old timers and the old dealers will tell you that in 1965, the GS package was a dealer offered package and that the 1966 was a factory package.I have more than the emblems.It has all the GS items that I know of. Got photos, got expert appraisers. It has 41,000 original miles, all original everything except for the crappy 2nd paint job. It was garage kept in (I think) Illinois. It was assembled in the Kansas City plant.
I do wonder how many of these were special ordered as there is no way to check.