I have what I believe is an AX-15 in a 97 Ram Full size.
For my setup to be truly comfortable in a car, I think a 3.23 gear would be needed, to keep the RPM down compared to the 3.55 in the truck, with 30" tall tires.
I think an OD vehicle, should be be able to run a deeper gear and stay in the "happy range". Perhaps this particular unit does not have a very deep OD gear.