That would work but there are a few things to know about spending the extra $$$ for that. #1 is that u-bolts are more easily able to ruin u-joints because people tend to overtighten them over the bearing caps.
#2 The factory u-joint straps are more than strong enough so you don't really need or benefit by going to u-bolts. The straps hold up in Johnson Valley afterall, so there's no real need to go to u-bolts like that. I'm running some big u-joints on my rig, 1330 and 1350s, but no u-bolts anywhere on the u-joints.
Personally, I would just replace the seal and save some $$$.