80G Frame............quite high up the vin no list as well
81H Engine........
Makes no difference as the charging system/ignition is the same from 80-84
This is Actually an Interesting project
The Odometer ca 14000 miles if I read it right...Nothing if that is true
That would have caught my attention if I was looking at a bike ..thinking about possibilities
No Major visible leaks at the outside Some at the Cam Chain tensioner and gear Shifter
The rubbers at pedals looks OK not worn.
This is something I would look into further if on the lookout for another bike.
It is not worth much since it needs a lot of work and parts But if the mileage is so low. Something can be done.
So my assumption would be factory engine factory frame .
( How can you be into the second engine after 14000 Miles ) some mixed parts.
I don't care how it looks at the outside as long as the mechanics and electrics is OK .You can go places
And Washing Polishing and some Paint can make a difference.
The finish can come later if interest , money and time.
It is not a project without risk It has been used for off-roading and it is a bit heavy for that.
Motocross people I know off don't treat bikes as the Road going fraternity.
Forklifts for moving around and Throwing in bikes at the back of the truck.
That can give problems.
It is not likely to have been maintained --serviced with Oil change every 3000 miles either
No Service Book ( if You understand what I mean )
I would try to inspect Fork straightness looking for rust and damage ..Swing Play ..Frame straightness.
And eventually try to start it after the correct procedure listening and looking for smoke .Which will be there in the beginning Valve Stem seals
Most likely in the beginning for a short while testriding try the wheel already there ( Carefully --no racing or speeding whatsoever or knees down in cornering ) for a while with or without the missing spokes replaced .But I would eventually replace for a stock wheel .. because of Brakes and chain lining up correctly-
I do believe it would be illegal here on public roads. With all what that means in terms of insurance and discussion with the Officer at the Roadside.
Or worse.
I would expect wiring problems in the beginning
But the mileage makes the Difference for me If the mileage were 40000 ... 50000 or 60000. I most likely would not consider it.