i noticed you bike had yellow fork guards. are you sure its not 83 D model?
The buggered bike pictured is a 10/82 model i think which would make it a 83(d) model. Im not real sure but the only changes were yellow fork legs and a blue seat.
In reality i only used the engine, carb and rear guard of that bike. The frame, rims, swingarm and all the rest were off the second bike which had the unfinished fork legs. I will check on the plate of that frame and let you know of the build date.
Cheers for the replies, this forum is great.