Thought it looked familiar.  I almost bought one on eBay, but realized it might be too much work for my taste.  Looks like it proved to be quite a challenge!

Nice work!  what size rear tire and wheel?

The chain looks loose because there is no weight on the bike. I weigh about 250 so it sags quite a bit when I'm on it. Chain slack was set with the shocks compressed.

Wheels are H2.15 x 18 36 hole shouldered aluminum rims from Mike’s XS.  I paid 85 dollars each back in 2012. The stainless spokes for the rear were 65 dollars. The prices for the same stuff from Ryca were more than double. Quality may have been better, I had no complaints.

The rear hub of the Suzuki was close to the same diameter as that of the Yamaha XS 650 so I used the spoke set for the Yammy.

I went to Buchanan’s in Irwindale for the front spokes. I took my hub and the rim to the shop and they made up spokes while I waited. They also had to redrill and realign the spoke holes, as the angles were not quite right.

Lacing the wheels was no big deal, just took patience.  I made my own truing stand, really just a dial indicator and a piece of rod for the axle. Trick was to use oil on the spoke threads so they wouldn’t bind up. That helped get a good torque value, too.

Tires are Duro HF308 Pirelli Universal clones. I had the Pirellis on a bike in the 60’s and think the pattern looks neat. This is the tire used on the Ural sidecar rig. Sizes are 3.50x18 front and 4.00 x18 rear.

Note that the swingarm had to be cut for tire clearance and then rewelded with a reinforcing plate.