check out this website and you might be able to figure it out... it will take some trial and error but you will be able to plug in numbers and might be able to figure out your speed vs. rpm's helping you figure out your ratios.
Transfer case is the part time NV 231 with a low range of 2.72:1.
Rear axles are the 9.25-inch (R/T only?) and 8.25-inch. Ratios - 3.21, 3.55 and 3.92 - are available. Both exles are available with limited-slip differential too.
