The kit is a 1980. The decals are an interpretation of stock, but I've not seen these in 1:1 either.
I've owned 2x 83's in my lifetime, a red one and a black one. I too wish we could get a full kit with a 22R to build. I posted my build of this kit in red (a close replica of my red 83). I want another to build my black one.
This is looking good! Can't wait to see the finished product.