You're closer than you think with that one
After looking at what can be done with an Airhead G/S I've been toying with one for a while to use off road. The prices have been on the up for a while but I have been in no hurry, after all, after hearing about this one I did nothing for nearly an hour

Anyhoo, it's a R80ST of 84 vintage, it's been kept in Spain for the last 5 years and not really used much. It's in what I would call very clean condition, not perfect but a cracking basis for what I have in mind.
I had a ride out on it this afternoon and was really impressed with how hard it pulled,
then really, really scared at how cr*p the front brake was
So I'm just going to use it as it is for now and if we fall in love then it's a strip down and make a GS replica