The only "improvement" involved in using the non-adjustable tie rod ends is the fact they're less expensive to manufacture. If the ball pivots are changed along with rebuilding the internal parts of the originals, you'll probably have as good a steering system as is available. If you're using oddball too-wide wheels there might be a little advantage to going with the later style rod ends, but there's a lot of work involved in the conversion, particularly where drilling and pressing the old ball pivots out of the steering arms is concerned. Then the steering arms must be taper reamed to accept the tie rod studs.
Jerry
