You could do a whole @HemiDenny front suspension, it converts to coilovers and a rack-and-pinion setup. That’s a “bolt in” solution.
Or you could keep the manual box and add a Toyota electric power assist under the dash in line with the column. But that takes some fabrication and messing with.
Thats an interesting proposal. I would be putting in a new steering column then anyway,I should research that route. Have you seen it done before? I'm not wanting to go to coilovers if it can be avoided.