So, I have a leak somewhere, I believe. The reservoir is empty and it is squatting. I just need some help diagnosing what the problem is to see if I should sell it, repair it, or replace the suspension with a LC spring, torsion bar swap.
Depending on where the leak is, more than likely your least expensive option is going to be to convert it to conventional suspension. This can be done using stock LC springs, torsion bars and shocks or by installing a lift kit that comes with springs, torsion bars and shocks. I would swing by your local Toyota dealer and pick up some AHC fluid and fill the system and see exactly where it is leaking first.