I seriously doubt that any shop in Detroit or elsewhere made a run of FWD 1978 Pinto Wagons for sale to the general public.
Dropping in a transverse engine FWD drivetrain into a longitudinal engine RWD engine bay is much more engineering than just an engine swap.
It may be possible that someone, somewhere swapped the U.K. Fiesta drivetrain into a Ford Pinto Wagon, but the fabrication costs would be astronomical, and would have been done for prototype or research purposes only, not for a limited production run for sale to the general public.
I did not write “for sale to the general public” nor “for the U.S. market.”