Has Anyone used the Walthers Coupler Pocket Conversion Kit on Passenger Cars?

Walthers makes a Coupler Pocket Conversion Kit for Athern 85’ Hi-Cube Box and Flat cars that will convert the couplers to body mounting with a swinging motion. Has anyone tried these to convert passenger cars to body mounted couplers? I am thinking of Athern, Con-Cor, Rivirossi and similer cars.

http://www.walthers.com/exec/productinfo/933-997

They look similar to the couplers on the Walthers passenger car I recently purchased.