Lets see if I can clear-up a few misunderstandings, myths, and as to why some of us convert to hubs, and the benefits if done with a bigger picture in mind.
I will speak of the Warn hub conversion - since this is what I have, did the install myself ~5.5 years ago, and have helped several others install. Yes, different rotors were installed at the same time as well as new brake pads. The entire job from start to finish took ~4 hours including taking coffee breaks, taking pics & lunch, and this was my first one. Others took less time, even while walking others thru the steps.
Some may say the kit is too expensive - which for them this could be true. For me, I got it long before the prices started going up & got it basically on a group buy price which is ~1/2 or less what you may expect to pay these days.
If I was building a rig that didn't demand a higher standard, I might swap to TJ shafts & be fine. But since I know that going that route is a big gamble as far as reliability goes where I like to wheel, I decided to go another route.
I have an older YJ, so I had 260 ujoints. I wanted to upgrade to a minimum of 760's and chromoly shafts, so I needed to replace the inners and outer shafts. I soon swapped to CTM ujoints since I wanted even more strength & the hubs to be even more likely to go before anything else.
Could I have simply installed TJ or XJ style shafts with the 297 series ujoints? Sure I could - however, those shafts tend to snap like thin brittle twigs where I like to wheel & I'd be replaceing shafts, ujoints etc, far too many times in a weekend.
Add deep axle gears, an Atlas 5.0, 35" tires, and full lockers in the mix & try running several Hammers trails all weekend long & you had better have several sets of TJ/XJ style D30 shafts in your toolbox. If you bring ~5-10 full sets already assymbled, you *might* be okay, but who wants to swap axles & broken ujoints all weekend long at a place where flat stable ground is very difficult to come by? Seen it too many times and you will certainly be the focus of fun around the campfire unless you learn real quick.
If you have 260 ujoints, installing the Warn hub conversion kit will require you to upgrade the inner shafts. This is due to the size of the axle shaft ear holes increases as the ujoint cap size goes up. However, the kit does not include inner shafts, they are optional & purchased seperately. Plus, who wishes to mix chromo outers with standard inners if you happen to already have the larger ujoints? Not me, I wanted the strength of the inners & outers to be more similar.
I wanted to build-in a "weak link". The hub kit does this, or should I say - it is intended to do this. Will a hub always fail prior to something else - no, but the chances are pretty high that the hub will go first unless something else is starting to let loose. And yes, I carry 2 spare hubs, plus assembled Warn inners & outers for both sides "just in case".
Changing a Warn D30 hub is usually foolishly simple if it happens to break. So if it does, simply remove the wheel lugs, tire, grab the hub with your bare hand, slide it off, slide the new one in, reinstall the tire & lug nuts & you can be back in business. How easy is that?
For those who believe that the Warn hub is the same as the hubs found on Rangers, Bronco II's etc - you are sadly mistaken or misled. The workings/internals are different & the Warn is much stronger. Just take each apart & compare side by side & you'll see what I mean. I did.
Since the OP requested info on the install, I'll post the steps in my next post in a few minutes.