suspension question

Put a level on the ground (or on a board the width from tire to tire) and see if you are on an uneven surface.

Or measure the two front's and see if the difference (if any) is the same as the difference between your rear height. If that makes sense ..

I also have the Mach 1000 audio, and it is pretty heavy, but not that heavy. Maybe 30-40 lbs tops.. I wouldn't imagine the spring companies don't do anything differently to compensate. However, I noticed a HUGE difference when I filled my first tank of gas after the springs/shocks. Car dropped like at least 1/2", if not more. Just a thought about your rears being different heights...I did my springs/shocks w/ the e-brake set (of course). My rears were sitting a little odd as well, but they leveled out once I dropped the e-brake....not sure if you already did this (also, springs should settle after being driven for a little while).

when doing the rears... make sure the pigtails on the springs are point twards the drivers side on both

Torinalth