Mazda 110S. The site I found has a different final gear ratio, but everything else checks out. And you also just bought a rotary Mazda......... So maybe its a different year gearbox or optional one or something.
Correct! L10A to be precise. I checked some other sites and a lot of them list 4.11 for the final gear ratio, but those are also 1967 models where as my source was for 1968. I guess I was a bit predictable there