I have no idea what or how the traction bars & sway bar are supposed to work/interact but to say this car is stiff would be an understatement. A considerable amount of time, money & effort were spent on this car, hopefully I'll find out everything from the original owner. Just on cursory inspections, the original trans has a cooling pan attached to it, there is a power trunk release that's been added and an in-glass rear defroster, which is not a simple task!
BTW, to answer Chuck's question, the fronts are 265/50/15
and rub just a touch on hard turns.