Allrad-LKW-Gemeinschaft

Good day all,
My Truck is a South African spec 1617 with slow axle ratio's of 48:7
I am in the process of converting it to an expedition truck and would like more speed in the green rev zone.
I am finding it very hard to get information about alternative Ring and Pin gears with higher ratios.
Can anyone please assist with some info please?
I have attached some ratio's that might be available but not sure if there are more options for the AL4 axle type.
Thank you

Are you sure about the AL4 front axle?
I think, it should either bei an AL3 or an AL7.

There has been an AL4 axle for a couple of years, but IMHO never in the NG series trucks.

Pirx