you can tell from looking at my sig that my car sits low in the back, lower than other camaros i've seen. it still rides smooth and handles great, so i think my shocks are still good, so would it be the springs? sometimes if i have another passenger or when i used to go to the grocery store in it(before i put my sound system in) it would bottom out on certain bumps.

 

can't tell anything from you sig. the only way someone would be able to see what it looks like, is to see a sideshot

anway, it sounds like you have a bad spring problem