[Hank70SS]

You can go back to stock if you want. You can buy a set of stock control arms, boxed or unboxed. You can probably find a set on Craigslist pretty cheap. They probably won't be boxed but you can buy the insert and weld them to make boxed set. You'll have to drill holes to bolt the sway bar on. If you go that way let me know, I'll find the link to a site that has everything you ever wanted to know about A-body control arms.

Or you can keep the current setup and add a sway bar if you want, looks like the arms you have are pre-drilled for a sway bar. I felt the ride was very harsh and improved a lot with stock arms. If you're okay with the ride, keep the arms you have. The lift bars do work well for what they're supposed to do, change the instant center and plant the rear end for traction. Stock arms due to the angle allow the rear to squat on launch.