Dick,
That's a really nice 'conversion' from the old Athearn metal kit. When I first got into the hobby as a 14 year old, the first kits I built - or tried to build - were some HO Athearn metal boxcars. NH (my home road in Providence RI) and RI were the first two, I think. Not easy kits to build properly, with all the interlocking metal parts, screws, roof rib forming, etc. Coupler attachment was problematical, too - Kadee No. 4s in a draftgear box that was also the end of the centersill. Whew!
I think you have created a silk purse out of something else.
Todd Sullivan