Wow, that Super Gran Tour is amazing. I'd be (almost) afraid to ride it.
Here's my contribution to this thread, near twin Ross Mt Hoods that my riding buddy and I picked up over the last couple of weeks. Mine (I'm wearing the Cino jersey) is a 1986 with Tange MTB triple-butted tubes and mostly Suntour XC components (including roller cam brakes) and a funky black stem with steel bars. His is a 1985 with mostly Shimano components and a Tange high tensile forks sticker (no frame sticker). His head badge says "Ross Allentown PA" while mine only says "Ross". This suggests to me that mine was one of the first bikes to be made in Taiwan.
Note that just this last weekend we took these bikes to Fairfax CA and rode some of the classic trails that the originators of mountain biking made famous. We also were given a personal tour of the mountain biking museum there by Joe Breeze and Charlie Kelly (two of the founding fathers of mountain biking).
Ross Mt Hood chromies