You guys need to work on your terminology because these posts are confusing as hell to follow.

You have a transfer case. You then have a front driveshaft that connects the transfer case to the front differential. Then, on each side of the differential you have half shafts (commonly referred to as CVs) that provide power to each front tire.

Broken CVs are common. YOU DO NOT WANT STRONGER CVs!!!! They're cheap and easy to replace. If you strengthen the CVs, you'll break the next weekest link; the differential.

With my previous vehicles I used to carry around a spare CV. Though they were much easier to replace than the XK since they were bolted to the diff.