Those are ok heads, nothing special. They are emissions era heads. The ones to get would be the D0VE or c9VE or earlier. Avoid D2VE or any open chamber heads.

c9=1969
D0=1970
D1=1971 and so on...

V=lincoln
T=truck

I'm sure others can add to this, I'm not familiar with ALL the heads for the 460/429.