Front suspension swap help needed

No Try again. ONLY the 67 K frame uses a 67 idler. That is because the K frame mount is different.

68-72 or 73-later K frames "can" use any year idler EXCEPT 67, BUT ONLY depending ON THE CENTER LINK

There are three items of interest:

1...Only a 67 K member can use and requires a 67 idler, and a 67 K therefore MUST use a 67--72 center link and 67-72 pitman all because of the 67 ONLY K member mounting for the idler

2...ANY LATER YEAR depends on the center link and steering box

2A.........A 67-72 center link must use compatible idler and pitman, and the pitman must fit the box splines

2B.........A 73--later center link must use compatible idler arm and pitman, and pitman must fit the box splines

3...There are two steering box spline sizes, and the pitman "studs" (along with idler "studs") changed direction between 72/ earlier and 73/ later

Those pieces must be all compatible

Standby for diagram..........

Read post 2 of this thread, note diagrams
confused, steering gear compatibility

The pieces mentioned above ^^ are INDEPENDENT of parts below:

For lower arms, you can use any year 67/ later unless you need factory sway bar ears, and if you have an early K, you must have 72/ earlier lower arms with the early anti-roll bar tabs

73/ later K members used a different anti-roll bar with the bar snaked inside the hollow K, and the lower arm tabs are different

If you are going with aftermarket sway bar, that is different, and "depends"

=========================================

Upper arms----------depends---if you have drum brakes or will use the 73/ later disk brake spindles, you need 73/ later disc brake A arms

Spindles--------------as above, different between drum or disc, and you might want to reverse them side for side to put the calipers at the rear rather than front, for anti-roll bar clearance. This will require different hoses, no big deal