Motorcycle Sidecar Subframe Mount Used

This is a used motorcycle subframe mount that came with an old Hitchhiker Sidecar I purchased years ago. It fit a Japaneses motorcycle is all I can remember. Maybe it can be reworked to use on another motorcycle. Made from 1 inch square steel tube. The base measures 15-3/4" long with a 1/2" mounting bolt hole. Upright tube is 6-1/2" tall with 2 mounting bolt holes 1/2" in diameter. Horizontal tube in rear is 6-1/2" long with a mounting tab welded on with a 3/8" bolt hole on the bottom and the upper mounting hole is 10mm (a little over 3/8"). On the other end of the tube is a threaded mounting hole 7/16" probable where a sidecar I-bolt mount was attached. Subframe appears to be a professional well made part. Black paint will need to be repainted.