What SWAY BAR to choose

I’m not an expert but I believe that complicates things since you appear to have 73-76 lcas with the tabs in place for the 73-76 bars as well as front mount calipers.

I'm in the same situation. Biscuit mount K member with 73-76 control arms. I asked Helwig and they recommended the #5904 for my Duster.