Don,
With all due respect,I think you are over thinking this. The WOLFE bar works.Mine was installed and adjusted exactly as instructed by Wolfe. The HR bar works. Your car sure could use either. Too many winning cars use both.
There are 2 trains of thought on the Bushing style used in the Wolfe and that used on other bars with a roller bearings. The thought is weather right or wrong...that the aluminum bearing will take the load better than the roller bearing. Its alleged that the roller bearing is made to take its load spread out over the entire bearings not just one arc.
Ill tell you from experience, Neither Cal or I with Wolfe single bars have suffered from any failure of the bar, frame or axle housing. My wolfes been in the car over 3 years with no issues on the busings. Cal has 3 times the passes mine does with no issues on the bearings either. I dont think I have ever greased mine since install.
One thing I have learned over the years is that bracing should be done on the bar install like Cottons does on his installs. More bracing is always good.