Looks like some confusion. If you have already or plan to put in a MII type IFS then either order the kit with a power rack or buy a power rack from the manufacturer of your IFS kit.
If you plan to use the stock type beam axle and leaf front suspension, then you can use the Toyota PS box or the CPP PS box.
Any different steering box will require modifying the stock column or replacing it with an aftermarket column since the stock column and steering box is one piece. To use the stock column with a different box, the steering column shaft needs to be cut off the box, a lower centering bushing or bearing installed to keep the shaft centered, and a lower floor mount fabbed or purchased. The original shaft then needs to be trimmed to the needed length and modified to accept the appropriate U-joint (usually grinding it to match a DD shape) to connect it to the box.
Note that the OEM horn wire runs thru the center of the steering shaft and out the bottom of the box. When the shaft is cut off the box, the wire is also cut, result is you lose the center of the steering wheel horn function. A new push button switch needs to be mounted someplace to operate the horn. Mid Fifty does sell a column wiring modification kit that returns the horn button, but it's fairly expensive (~ 1/2 the price of a new aftermarket column).
No matter what PS system you use you will also need to source an appropriate PS pump and the bracketry to install it on you engine.