Sorry about the delay getting the pictures but I had a "must do first" project come up from "she who must be obeyed". At any rate here are the pictures - it looks like I be using Kadee G scale couplers, probably with a straight shank, again probably modified to some degree unless someone has a better idea or been there before. I downloaded the Kadee catalog but found that they don't seem to put in the dimensions of the various couplers as to shank length or width. Is this info available anywhere or do I just experiment? Thanks in advance for your help.