Want it to handle like a new car!!!

Mine might handle more like a new truck, but here's what really made a difference for me.
Energy suspension 1-1/8" sway bar with poly bushings. 340 sized torsion bars, Moog offset upper control arm bushings, poly strut rod bushings, and re-arched hd leaf springs with poly bushings.
Energy has discontinued the sway bar kit, but I think Hotchkiss still makes something comparable. The poly leaf bushings were also a huge improvement for not much money.
Wheels and tires are my weak link. BFGs on cop wheels will only do so much...