My 40 has leaned since the day I bought it. Put new OME suspension on it (two different times), then did a spring over. It still leans to the drivers side.
The Land Cruiser Lean is an immutable law of Land Cruisers.
It's up there on the same shelf with Gravity. :D
An OME suspension kit with a Shackle Reversal is going to net you about the best ride and handling short of a SOA or custom link suspension.
It does lift 2.5" but 33" tires in combination make it a rather nice setup.