14bSF with 6 lugs? I've found one at a local yard that I can pick up for about $150. It's in excellent condition, but it doesn't have the gears I'm looking for. I'm planning to regear in the future anyways and I was going to use the 10b and 12b I have now. I was just thinking maybe the 14bSF would be better than the 12b. Or should I sit tight and wait for a 14bSF to come through with 4.10s? For the FF guys, I've done some brake upgrades and replaced numerous parts on the front axle I have now and I don't want to loose those to go to 8lug. What's the difference between the open and semi-floating differentials?