or have an axle built to the width that you want.
That can get expensive, depending on what you have built into the axle (gear ratio, lockers, etc). Last I checked, you'ld be looking at around $1500 for a basic open steer axle. If you're looking to do any sort of off roading or possibly plowing, might be worth it, though.
Another option would be to narrow the axle(s) yourself, if you have the necessary skills. You might take a look at 4X4 Xtreme on the Power Block website. Ian Johnson has done several axle conversions like this, mostly using Dana 60s, but the concept is the same.
