I looked high and low for aftermarket rims that will fit a Gen2. The Gen1 trucks use a different bolt pattern so the followoing comments apply only to Gen2.
Basically, after an extensive search it was really only the ProComp 7089 rims that met all my criteria. Amazingly, there are very few rims out there with a 6x4.5 bolt pattern, which is what the Gen2's have. After that, once I looked at the offset needed, I think it was -12mm for my 315/75 r16 tires, The ProComps were about the only option left. I could not find any steelies that would fit, except for the Nissan factory steelies. the guy at the tire store advised me NOT to put a 315 tire on the factory steelies because the rim is too narrow for the tire. So I ended up with the PrComps.
If you go google xterras and look at all the images of Gen2 trucks you will see that nearly all, if not all, run either a factory rim or the ProComps.