since you have overloads ( I assume above the main pack) you might consider Stable Loads instead of a sway bar.
I have a 3/4 t. Dodge with double, 1 ton overloads above the main pack; the factory not-so-thick anti-sway bar; Rancho 9K's set on the stiffest setting; and Stable Loads. This system has worked well for me without the 'recoil' and side-to-side sway you get with air bags. With the rather wimpy factory anti-sway my rig is very stable on corners and does not 'BOINga-Boinga-boinga' when I drop a wheel in a hole. The secret is all those dumb old leaves dragging on each other, saying, "duh, what happened?".
I have tried with and without the anti-sway bar attached and it made some, but not much difference. I always detach one side on the anti-sway bar when I get off road, further diminishing the pull/sway/recoil on big pot holes. An attached anti-sway bar pulls you from side to side on bad roads.
It took a lot of experimentation and the corporate memory of my Jeeping dayz to get to this point.
regards, as always, jefe