Tie Rod Ends Hitting Torrsion Bars????

Only difference in 67 and newer K is

67 has the oddball idler arm mount and can be modified

Starting in 73, K's went to spool engine mounts

Here:

http://www.bigblockdart.com/techpages/techindex.shtml

The thing about pitman arms is, read the section on that page about steering boxes:

http://www.bigblockdart.com/techpages/steeringbox.shtml

You need to figure out if you box is small or large sector (this a power or manual box, I missed that)