the gripframe you're refering to is the Super Blackhawk Dragoon style frame, they were available from Ruger on the Old Army in brass only, the steel version was only on Supers, they were for the old model 3 screw frames which were switched over to the New Model transfer bar system in 1972 or 73, you can find them on the Rugerforum in the classifieds, they were longer in length than the stock XR3-RED frame of the time, the bottom 2 frames in the pic are dragoon brass frames, one I bought at a gun show, the other I took off my brass framed Old Army
