whenever i go over any surface that is uneven or has even minor bumps i can feel and hear a noise on the underside of my car. sounds like its coming from around the stabilizer bar area. the noise sounds like a rubbing/flexing/grinding, i dont know its kind of hard to describe. i also noticed that when i jack up the car, it also makes a noise like metal is flexing until its completely off the ground. while i was under there i noticed the bushings on the stabilizer bar need replacing. could this be my problem? also, what else expands and contracts underneath the car like the struts. i was thinking it might be the struts making the noise, but theyve been replaced twice in the last year. is there anything else i should get checked out?