This is correct, concerning the 1977 FJ45; however, the 1967 and earlier FJ45LV wagons used the same brake components as their early 40 series counterparts.
Axle is compatible and will bolt in physically.
Brake lines are not the same; however, this possibly could be as easily remedied by swapping a brake hose from the frame to the axle, provided you can install a later hose into the T fitting on the earlier front axle.
Clutch master/slave: while nearly the same, again, use different sized fittings for the fluid lines/hoses. The master and slave from these will bolt into the same places, respectively.
Alternator should swap over without issue.