[BLAZERMAN]

If your wanting to keep the same weight rating you have then find yourself a Marmon Herrington front axle. They've been in business since the 30s and are still building the big 4x4s for Ford, Chevy and others. They have a bunch of different configurations tho so keep in mind things like drivers or passenger side drop, ratio, wheel lugs and size to match your rear and brakes. Sounds like a cool project!