Those anti-sway bars look just like the ones I have. Unfortunately I don't know what kind mine are either but they look like the earlier Suspension Techniques bars with the welded on tabs. The PO added them way back in the day.

I put those sway bars on yesterday and took her for a few corners around the block. Who ever made them seemed to do a good job of ballance as the car is flat and very neutral in corners now : )