Left and right Torsion bar

Since you used .920" bars, it presumably does not matter. The .920" and larger Mopar Performance bars are supposedly the same L and R; see here:
http://www.hotrodreference.com/90/mopar-a-body-torsion-bar-size-and-part-number-reference/

I don't think you are looking at any significant numbers on the t-bar ends; I think the last 3 digits of the Mopar Performance number may be on the other end (that you cannot see).

Dumb questoin: Have you adjusted the height adjusters in the lower control arms? These are fairly stiff bars.