My ‘63 doesn’t have any hooks like those for belt anchors (my ‘65 FJ40 does). No holes either for mounting them. Maybe it didn’t have belts as it’s before seat belt mandate. There are footman-like loops (2) in the back, none elsewhere so don’t know what those are for - pretty sure not belts as not strong enough. Did the early rigs (ala FJ25 vintage) have lap belts attached to seat frames? I thought I saw a pic of that somewhere.