Not super cheap, but Rock Auto sells w/o requiring a core: 1984 TOYOTA PICKUP 2.4L L4 Steering Gear | RockAuto - https://www.rockauto.com/en/catalog/toyota,1984,pickup,2.4l+l4,1277243,steering,steering+gear,7416
Lares is a good rebuilder, based on my experience.
If your '73 has wipers mounted on the top inside of the WS frame, they may not fit/work well. Check www.sor.com for fitment years. The earlier ones have longer arms (vertically) so the visors can swing up and clear the wiper parts.
That's a $250-300 radio - grab it. That steering wheel has to be rare (esp. the horn pad). I'd grab the glove box door and every knob that pops off easily, too.
Most of that very pretty valve cover will be hidden by a big air 2F cleaner - sorta like you hope a beach towel covers the lady....
A great deal for someone, here!
Wanted - a ConFerr filler panel just like this - any color and most any condition except cut up or rusted out. PM me with what you have. Thanks - Steve