Just excited that I'm finally getting the Blazer put back together...... I did the 10-bolt to 14-bolt FF swap this last weekend. The bottom of the 14's case was ground off for about an extra inch of clearance. I'm going to do some measurements between the 10 and 14 to see what the ground clearance difference is now. The 14 also has a "lincoln locker" in it. This was done by welding the spiders to the side gears and essentially making a mini-spool. This way if I don't like it the spiders and side gears (now one solid piece) can be pulled out and a Detroit dropped in. Can't wait for a road test.