It's been mentioned that all that is needed to make ride-height adjustments is some penetrating oil, the proper spanner wrenches for the top and bottom nuts, and some spring compressors. Two quick questions to anyone who has tackled this: what are the sizes for the wrenches, and can they be found somewhere local, e.g. NAPA. Also, belt-type spring compressors are recommended. What exactly are these, and again, where can these be found? I've seen the screw type but haven't come across the 'belt-type'