ok im going to go with shocks cuz i love the bags but it bounces like crazy almost dangrous crazy if driving heard .. btw your truck looks good i like the new rims there hot
Good call. It looks like you might need shorter end links on your sway bar as well, that could be causing a lot of sway for sure if you have the stock end links on. Was your truck lowered before the bags? If it wasn't lowered at least 5'' in the back you need a few things:
-shorter end links on your sway bar
-sway bar needs to move over about 2'' to the passenger's side to clear the pan hard bar. You just have to move the driver's side bracket over
an 1'' or so and get offset end links
-Trailing arm relocators. These will help with your pinion angle(I'm pretty sure that is what they do) but you need them for a 5''+ drop.
If you don't have any or some of those components that is certainly the cause of the sketchy ride. If you have those things then the shocks should hem it up. It also looks like dude left your bump stop brackets in with no bump stops, you should just cut the whole bracket off it will give you a lot more travel. It's like 30-45min work with a sawzall. They will have to come off when he notches it anyway.
I'll tell you what....looking at your undercarriage makes me soooooo glad I live in AZ. That is some rusty ass shit there........