Ok I know my car is old, and I want to build from the ground up. Im assuming the suspension is original cause I never touched it. Today I found out that my panhard bar was really lose, I pushed the car from side to side and it sounded terrible. I instantly tightened it up. There are other misc. squeaks and rattling that I just can't pinpoint though. I have removed the trailer hitch the previous owner had installed and I think some of the left over bolts are making the noise, but unsure and I can't fathom anyway to get them out cause they are lodged inside of metal. Since my swap has been finished I have been trying to bring it more up to date and fix things as they go. I really want to tackle the suspension first.
Does anyone have the AGX's and what springs are you running with them? I want this car to be versatile i.e. light track use, street driving and some more autox type stuff. I don't want to lower it too much in fears of bottoming out. Any suggestions?

p.s. I know its not on topic but what do you audio guys do for preventing the taillights to be so loud? Im running 2x kenwood excelon dual voice coil 12's and a year older excelon amp with excelon 6x9's they are in an e-bay special custom box. Thanks