14 bolt ?\'s, and Central Texans Ok, I know this has seen a lot of coverage. I found a 14 bolt on a 3500 GM box/utility truck. How do you tell if it is a SF, or FF? Also, they want 450 for it. I have seen other posts about TX junk yards having lots of them, and at this price, its on the high side. The U-Bolts, Can use the ones off my 10-bolt? Or do I need the ones off of a 14? This utility truck, I am not sure the year. Opinion wise, would this be a good donor, or should I find something that was not a commercial vehicle? I am in Austin, and was wondering what junk yards are like in San Antonio... I know they gotta have more than we do here. Anyone know an area of town in San Antonio that has a bunch of junk yards all within a few miles/blocks? Or other than the ones in Austin city limits, are there any others worth looking at in the surrounding areas of Austin?