My 2006 dodge charger TB has been bouncing a little when I hit a bump. Is that considered bump steer? Someone told me my ball joint are going and they need to be replaced? My car has 47k miles on it and I have never done any front or rear suspension work except upgrades like Hotchkis sways and KW1s.

I know that my bushing on my Hotchkis sways are gone which I plan on having replaced.

What normal maintenance should I have done if they replace my ball joints? Also should I buy after market parts that are better than stock?

Thanks

Dave