Anyway, ity's not uncommon for older Rangies to lean, single bloke with a bit too much money and carrying too much weight tended to own them when they were new.
If the springs are weak on the driver's side it will lean but also the front radius arms settle into a permentant lean so that new springs will not cure it.
I don't think the dampers will do much to help, though I thought that once about my old Escort, changed the springs and it was still too low, changed the dampers and it went up over an inch :? Go figure.