[lolife99]

If not,... you will learn the hard way like me.
I had a set of brand new McGaughy's 71-72 spindles that I got for $100.

The easiest way to install these is to use ALL the steering from a 71-72 truck including the centerlink, tie rods, and new 71-72 ball joints.

The expensive route that I took,... involve tie rod adapters to convert the 71-72 outer tie rods to the 67-70 drum brake steering.
Simple buy some tie rod adapter sleeves.
NOT.

These sleeves convert the larger (11/16") 71-72 outers to the smaller (5/8") 67-70 inner tie rods.
So so simple.
The 71-72 outers are RH thread.
The 67-70 inners are also RH thread.

That means you have to buy 67-70 LH thread outer tie rods and install the in the inner location.
What a pain in the billfold.

It can all be done.
That's what I did on my '69.

The cost effective way is to install conversion spindles.
This keeps you from buying:
1) upper and lower ball joints
2) inner and outer tie rods
3) $60 tie rod adapters

Not including the original priice of buying the wrong spindles.

All of this info should be in the conversion info in my signature below.
Drum to Disc Brake Conversion Info:
Just click on the correct year for the swap!