This chuck from new was adapted to a wood lathe (Wadkin RS) so the back plate is threaded 1-3/8"-6. It has seen little use and appears excellent condition. My thought was to purchase a back plate and use it on my new G4003G lathe as it is probably better quality than stock, but would it be worth the effort? Maybe just trade or sell and use any proceeds for more useful tooling for the lathe or my Bridgeport?