my landcruiser drifts all over the road and I can't find what the culprit

[Zipper]

If the vehicle has had a lift, then the "kingpin"/rake angle of the front hubs will be out, and the vehicle will wander or feel vague driving straight ahead, a bit like driving a forklift at speed. If you are in Perth, WA Suspensions will sort this out (castor angle).