What fits, late to early front end parts to swap?

Hmmm. Early A’s are not my specialty for sure.

Control arms and out will work fine. K frames don’t interchange, and I’m not sure that you’d be able to use either sway bar. The ‘74 LCA tabs will be too close together for the ‘64 bar, and with the narrower track I’m not sure the ‘74 bar would work either.

You might ask @DionR, I think he narrowed a later K for use on an early A