Very simple fix......

Except the guys that engineered the system still used a steering joint that allowed for slip even with the 2 piece steering shaft. Because despite being 2 pieces that are supposed to collapse in case of an accident, it's not designed to take up that slip.

A simple fix isn't always the best.

This is what I did with mine. Not saying it's the best way to do it either, but it does account for the same movement that the factory joint can handle and a simple u-joint can't.
Steering shaft upgrade

I can visualize the engineers at Chrysler back then....crap we have thousands of these steering joints still, I guess we will keep using them. I greased up my 2 piece steering column and it moves in an out with little effort, especially the small amount that is necessary. I really don't see why the setup won't work for the long haul.