I have a '89 Blazer (700R, NP241, 350cu, 10bolt-30 spline axles, 33" BFG tires, 4" lift) that I'm planning on replacing the rear axle (and change my gearing from 3.73 to 4.10). My Blazer is used mostly for desert/beach/baja pre-running... very little to no rock use. Never been broken, would like to just upgrade due to mileage (120k) and gearing needs. I do not want the weight, nor need the beef of a 14B! Even though it's going to cost me lots $$, the perfect rear axle for my Blazer would be: 1. A 12 bolt van axle housing. Provides a 3" wider track than stock; matching the stock front axle housing width. 2. Convert to Full Floater (Warn FF Kit? Would this work?) 3. Upgrade axles to heavy duty (ORD? Moser?) 4. Convert drum to disc brakes. 5. Keep my 6 lug rims. NO desire to change to 8 lug. Here are my questions: 1. What year vans offer 12 bolt? 2. Any 12-bolt van axles with stock disc brakes? If not, approx cost/recommendations on converting to disc brakes? (I also need to keep parking brake operational) 3. If 12B vans only offer 5 and 8 lug, how do I change axles to 6 lug? Is this possible? How? Full Floater Kits available? 4. Any need to change/adjust my brake proportioning valve? It would sure be great if someone made an axle like this. Any help on the above 4 questionswould be greatly appreciated!