Disk conversion, need info???

[chevy one]

Dose the center link need to come from the donor truck? The donor is a 71 going on to a 67. I have the I/O tie rods, calipers, upper & lower ball joints all new for the 71 year. The spindles are original from the 71 donor. I did not rob the center link, will I need the 71 link to hook the up inner tie rods? If the 71 link in needed will it connect to the 67 pitman and idler arms? My 67 dose have power steering, if this also comes into play as well.