Got a truck! '76 D100 400/4 spd. shorty

The truck looks good. That granny gear will be good when towing the Duster and all the oh-oh spare parts to the track. Keep thinking about that rear ratio since .69 is the O.D. Ratio correct?

4.10 X .69 = 2.8290 (2.83)
3.91 X .69 = 2.6979 (2.70)
3.55 X .69 = 2.4495 (2.45)
3.23 X .69 = 2.2287 (2.23)