I will never lower with keys ever again. I have coilovers upfront with custom upper and lower arms that narrows the track width. Custom hem steering, and beefy sway bar and all new bushings. Rear I used to run Tony’s springs (which I like a lot and Tony is a great dude). I ran his springs with full Spohn rear and JDM offset with beef sway bar. i’m currently now running coilovers in rear.
I’m putting all this info because I bought mine new 05. It was going to be a SEMA project but I went a different route. So haven’t doing keys and spjndal and the latest innovated crap that’s come and left throughout the years.your budget might not be there right now. But I would never waste my money again on keys, springs, spindles etc.. My setup now fully tunable, rides great, no bumpsteer, I can slam it or bring it up a little bit. With the CO setup it you literally throw the t bars and every thing away. If it would help I can post pictures of the install during and after.