[FirstOwner69]

Based on my observations, I believe the bottle was mounted on the core support until sometime during the 1969 model year. I say that since that's where my original 69 produced during Dec., 1968 had it mounted, but many (most?) of the 69s I've seen had it on the left fender. The mounting brackets were also different as seen in the picture below. The one on the right is from my 69. I got the other from a later model in the junkyard. The extension on the rear of the one on the right allows the bottle to properly fit on the core support.