Rear Sway Bar?

My sway bar is .125 diameter, which is much heavier than a stock way bar. Unfortunately, I still have the 13" mini wheels with 185/70 radials all around. The suspension is original in good condition with some replaced parts. Doing the higher speed turns the rear end still has grip but makes me wonder if it will swing out if pushed a little harder.

so you have not actually experienced the rear end skidding or sliding out ?

this is just a worry at this point?

sounds like and original /6 torsion bars and rear leaf springs. With 13” rims, it probably has small 9” drums front and rear. Does it still have a /6 motor?

With those 185/70/13 tires at 50-60mph curves like you see in my video, you’ve got grip and sidewall roll over issues. You need to address that to some degree first.

On curves or freeway on-ramp with post MPH signs are you exceeding 10-20 mph over posted?