I am looking for a bike to work on and ride - not a full blown restoration, just enough to be clean, reliable and wrench able. My skills are mediocre - confident in earlier rebuilds of dirt bikes, a couple of marine outboards and one old jeep motor/suspension.
I have the chance to pick up a R75/5 in very nice shape physically but doesn't run after a long time in storage. Similar opportunity with a R90/6. Thinking I'd tear them down pretty far to learn, replace various seals and gaskets, cables, rebuild carbs, etc.
From a parts availability and complexity perspective does anyone have a strong opinion of one over the other?