I've had to make my own. Are you looking for the 'F' Body Mount under the radiator support or are you looking for the 4 mounts that the front of the cab/body rest upon?

Try this link for the measurements:

Ranchero US: body mounts diagram ~ revised~

I don't know if you can find a source that has them made to the dimensions needed. I may be tooling up to make a set for one of mine in a couple of months if you can wait that long...