Worst? 1979 Dodge Ramcharger....rattle your molars loose.
I spent a lot of money, time, sweat and blood getting a 1995 XJ to ride right, but that was with LOTS of tweaking. 4" of lift, drop brackets, custom spring packs and all sort of other stuff.
My 1991 FJ80 was great with an OME set-up. It...