Originally Posted by Beater
That looks like a post '79 or '80 to me ... Later Airbox, Snowflakes, and ATE's ... but it could be a '78 (with a later Airbox). The second picture *might* have a bit of Havana Gold peaking out ... marking it as a '78 only color ...
It is defiantly a 77. Non ribbed trans case, early choke lever zip tied to a late airbox, non remote shifter, early frame..........
It looks like some was parting out a 83-84 R80RT and took the rear fender, tail light and wheels and put them on this RS.