ok so I have a 99 intrepid 3.2 its the es model 2 months ago my car started making a noise in the front end every time I hit a small hole or bump in the road it would hit hard and also when I go to back up and give it some gas my car feels like it goes down in the front end like something is loose I took it to the garage and he replaced the ball joints and a few rubber bushings still didn't help so yesterday I took it to the garage and I told him to change the front struts he did he also replaced the strut bumper and it still does the same thing hits hard I asked him to check every thing in the front end he said all was tight he said its hard for him to replicate the force that the car has does any one else know what I should look for? im getting pretty desperate now ive spent like $500 iN the front end what else could it be