Hello...I have a couple questions for you guys. I have gotten lots of good info from here. I appriciate it. I have a '99 GT with Steeda u/d pulleys, Steeda Timing Adjuster, 18x9 rims, 265/35/18 tires. It is stock beyond that. I am ready to do some upgrades. Figured i would start with suspension so i don't kill myself with power. I ordered Steeda Sport springs, caster/camber plates, offset rack bushings, spring isolators, tokico struts and shocks, Steeda bumpsteer kit, Steeda front and rear swaybars, Max Motorsport Subframe connectors, Steeda strut tower brace. I want to get upper and lower control arms to. The aluminum ones are much more expensive. Is weight the only difference? I am just concerned with handling. I do not race. Do i need anything else for suspension? Also ordered Bassani X-pipe with Magnaflow catback. Going to order 3.73 gears and bearing kit because i MAY supercharge later. basically my question is (after all that) do i need a programer or chip yet? What is the difference? I really don't understand. It seems $400 could be better spent elsewhere for now. Anyway i can make my speedo correct though after new gears? I plan on more upgrades in the future to the intake and so forth. Sorry so long. I appriciate any help....