On a 80 model FJ axle the hy-steer kit for a mini truck will work arms and all.
I would go for an IFS box I just picked up two this weekend at Pull and Save for 40.00
You would be set for what ever size (within reason) then.
80 Series landcruiser front axles are very different than a mini. The arms will not work.
Even if the FJ has power steering, it would be a nightmare to fit in your sammy..
