Normal stuff like front and rear main seals would be worth checking. Also, the side cover (on the distributor side) can sometimes leak, snug up the bolts and see if that helps. Otherwise, t-case output shaft seals...
Good luck on the build and welcome to the forum! With the SOA you might want to have a traction/anti wrap bar and make sure your steering is okay (caster angle). Otherwise, have fun!
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD