steering swap question - tie rods

[DanJC]

I have searched and searched and cannot find the answer. We are swapping a square body power steering box and center link onto our '67 with original power steering due to the non-stop leak of the '67 design.
Got the box fit to the frame and the bumper bracket cut for clearance. Went to bolt up the center link (it has the correct taper for the pitman are and there is no way to the original...) Looks like I need to use the square body inner tie rods (11/16) and the original '67 outers (5/8) to fit the spindle tapers.
In all the threads I have read I have never seen this issue addressed. Anybody have any help?? Thanks-