74 Dart Wiring Help Needed

I have a 74 Dodge Dart Custom 318ci V-8 RWD Automatic transmission. I need suggested wiring harnesses for all wiring and advise on the torsion bar suspension. The car leans alot while turning I've replaced the shocks and leveled the adjustable ride height. So do I adjust else where and/or do I have things to replace? The car is all original!