I added front and rear sway bars to my long bed. It came with no front bar, so going to 2 bars was pretty dramatic. So driving it, it handles well and stays nice and flat during turns, instead of almost scraping the door handles on the ground. I have the crappy KYB shocks on it at the moment, so it kinda floats down the road like a Cadillac
Overall, I think I would add a rear sway bar again. I highly suggest you get a front sway bar.
For the rear shocks, you need a shock re-locator kit. This one from No Limit moves the shock to the outside of the frame, providing a bit more stability. It might be enough that you won't want a rear sway bar.
https://nolimit.net/store/Dropped-Sh...unts-p26244502