Yep, those really are the standard OEM airboxes from my Darmah and they should be a straight fit, at least onto your frame. Because of their positions under the tank & behind the side panel you don't actually see them. I removed them because I wanted space for a rewire and the new ignition system. I fitted K&N cone filters which do provide some protection but I noticed your carbs only came with trumpets & wire mesh. The latter isn't really going to stop gritty air getting into the bores. Btw the engine breather pipe usually connects to the front airbox but I can't see where yours was routed to. Again, I used a K&N filter.
In that general area, yeah, but pointing down on the ground. I’ll try and take a pic. It didn’t shock me, to be honest.
I've seen a few where the pipe was rerouted to end over the chain run or run along the rear mudguard to come out near the numberplate thus avoiding contaminating the rear tyre.
I really have this warm fuzzy feeling that this bike has been well treated by its previous owner. It’s the 3rd « older » bike I get from Japan and I must admit that every time, the previous owners were very good at keeping them loved and cared for.
And rear break done. No sweat, I was expecting a much more difficult experience… One piston came out right away. The other needed more persuasion. Comparing stock pistons and new aluminum/Teflon ones is pretty interesting. Everything is clean now, with new seals and all. Master cylinder works perfectly. I got m/c refurb kits but will not use them just now. Waiting for new pads and brake likes. And this is not going back on this bike. Next are the front calipers and lines. I do not expect anything difficult, as these were not seized, unlike the rear one. Stay tuned!