The first one with a 418cc Yanmar single driving a CVT while the second version is an Aisin supercharged Kubota vertical twin with a belt primary driving a Royal Enfield 5 speed. I lost my shop in town a year ago and only now getting another set up. So, the Kubota's unfinished as you can see below. You'll note in each instance it's a Suzuki GZ250 tank. And then I have a 900cc Kubota triple and another Enfield 5 speed awaiting the next build. Will use either the 300cc Aisin or 500cc Aisin for that build.
Here's the Yanmar during the build.
And here's the unfinished Kubota. Blower is on the opposite side driven off the clutch. I built an on-demand propane fumigation system for this application. But, not sure I'll use it now given the Kubota's an indirect injections lump. And the Savage is on the bench to my back when taking this pic.
And now we're completely off topic for this thread.