Well, the snow PLOW is a separate set of self contained sprues in the '77 GMC kit. Even bagged by themselves, so in theory at least, could be added to any kit. I've not seen the Arctic Cat snow MOBILE, but I suspect that it is a small set of sprues also. Therefore, Revell could drop either or both sets into to any pickup kit in order to add "flavour" so to speak, and call it a "new" kit. I am all in favour of this kind of thing. These smaller extras are getting hard to find, and throwing them into a kit guarantees a sale to me. I would not mine seeing the long lost Camper Shell and roof mounted driving lights come back either.