'67-'69 140's had smaller top balljoints & smaller tie rod ends & drag link ends. Also, the bottom wisbone bushes are smaller & solid rubber. In my '69 car I threw the whole front end away including the idler arm & pitman arm & put later stuff in. Interestingly, the smaller tie rod size that Volvo considers too small is the same size as on six banger Valiants from the same era, I'd guess they are a standard S.A.E. size.

Cheers,
Paul.