My 5.83's were just right, for 31" tires, now that I'm on 33's, it's still OK.
I have the Calmini 4.24:1 transfer case gears.
So - 1st gear = 3.62:1, Low = 4.24:1, Diff = 5.83:1
Multiply them all together to get 89.48:1 overall crawl ratio.
It's basically unstoppable.
Unfortunately, high range is still 1:1. That's the way Sidekicks work.