04 dodge caravan sxt hear a popping noise on the passenger side

Hello, it's better to try and pin point the source of the noise before replacing a bunch of parts and hoping the noise will correct. Body noises won't resolve replacing those parts, and neither will subframe bushing noise or subframe concerns. A good inspection of every relevant physical component is needed, including everything in the steering and suspension, including the steering shaft, the subrame, subframe bushings, stabilizer bar components, and so on. The transmission slipping needs to have a diagnostic test performed.