I believe my C5 was lowered in the front when i bought it and i want to lower the rear. From what I have seen on a picture of the "lowering kit" is two shorter bolts? I was wondering what bolts these are. Or what is the easiest way to lower it. Are the bolts the ones that attach to the Flat bar(name?) that runs across the bottom?DO the bolts have three rubber bushings on top? Sorry for all the questions?