what are sway bars, and strut bars, and tie bars? what are they used for? how do upper and lower bars differ? do i need them if i lower my car?

just for you :)
http://www.automotiveforums.com/vbulletin/t21304.html

Yea of course go and buy one. The strut bar runs from shock tower to shock tower and holds them tightly together so you have nice crisp handling...mmmm.....:licker: :D