'68-'72 or '73-'76 k-member?

So, I found a source for a big-bolt-pattern front-end swap (from a '75 Scamp) for my '67 Valiant. The person has multiple k-members available. I'm guessing there's no real decided advantage from a steering/suspension point of view between the two different k-members, but how about from an engine-swap perspective, assuming both are V8 k-members? Would you go with the '68-'72 or the '73-'76, and why would you pick that one? I'm leaning towards the '68-'72 k-member cause it seems like the selection of mounts is better.