Fair question. I need to actually verify what gears are in mine. I believe the standard issue 55-62 truck rear was 3.90?
Using the same calculator, I don’t think I was running nearly the RPM it would take to pull 65 mph with my rear/tire combo.
I guess if I could find a better one that actually has the 3.90 gears, that might not be a bad match to the T5.
