Left Lean and Aftermarket E-85 Kit - 2 Questions

Could be a spring, but I would suspect perhaps a ball joint or something else is going on there. Some of the Rams we saw at the dealership (typically 90s models) had to have a chassis diagnosis done and sometimes involved putting shims in, etc. Have this checked out. A left lean is a bit unusual. I have no experience with the aftermarket E85 kits, but I know that most of the flex-fuel vehicles made now have quite a bit of modification: different fuel tank, lines, and pump, different injectors, hardened valve seats, etc. to deal with the corrosive effects of E85. You might be better off looking for a flex-fuel vehicle used.