Haven't checked the rear gear ratio yet. Spend yesterday disassembling the front-end valances, but that very topic came up with my friend while doing the work. I'll get back to you that at some point. The OD isn't for the Trout Lake geography, rather, for longer drives on I-84, I-97 and OR Hwy 26. Also, the drive from Trout Lake down to civilization (i.e. Hood River & The Dalles) via WA SR-141 is a straight gentle 25-mile/1700ft drive to and from SR-14, so to go anywhere is a minimum 50+ mile round trip. Also, my experience with my '49 Chevy with a 3speed is that at 65mph I was pushing 3000RPM with the max gearing we had and the only non-fabrication option was to get a larger diameter tire, which dropped it to 2750RPMs (still a bit too high for mileage and ambient noise for this classic rock enthusiast to hear his music on road trips).