The local forum for your area might be a good start. Should be Illinois or maybe your county. I would just find a 4.10 front end and put in it personally. All the 4 cylinders came with 4.10s and it would be a direct swap. The difference between 4.10 and 4.11 wouldnt hurt anything. Those gears would be better for bigger tires if you plan on running like 33s or bigger...
91 Laredo, 4.0ho, TF999, Magnaflow exhaust, Yukon rear axles, Spartan Lockers, Posi locker, 3.5 inch springs, 1"MML, 1"BL, 1"shackles, trimmed fenders, raised flares, 35x13.50s.