Pitman Arm the same from 67' to 72'?

[AusTx68]

I picked up my 68' just over a year ago. At some point a PO upgraded to front disk brakes with 5 lugs front and rear. Since tearing down the truck I found a mix of steering parts that has been causing me frustration. The front disks are 71'-72' but the inner/outter tie rods and center link are 68'. Looks as if the disks were an aftermarket conversion item that allowed the PO to keep all the 68' stuff.

I have since installed an ECE 4/6 drop kit. Now the tie-rods don't fit which means my center link must be changed too.

If I go to a 71-72 centerlink can I keep the 68' pitman arm??