IMO The types of questions asked are not indicative of a basic knowledge of front coil suspensions that GM has used for years. Somethings are down right dangerous and playing around with coil springs is probably the most dangerous anyone would tell some one to learn with. Its one of those get someone that has done it before and you be the assistant. Its like inflating a truck tire with a split ring outside of a tire cage. I've done front springs a bunch of times both for upper and lower arms. Always gets my nerves on edge until the spring is out or the ball joints are securely bolted in.