Fitting a worn out chuck to an old faceplate on a vintage lathe

I'm modifying and old faceplate so can mount a worn out 7.5 inch chuck to my vintage Karger lathe. I'll tell ya, turning cast iron sucks, and is a messy job! I am trying to make some money for my youtube machining hobby through the Banggood affiliates program. Follow the link below, buy something you NEED and I'll earn some commission. Doesn’t cost you anything extra, and you're basically saving money out of Banggood's pocket :) 3/4 KW VFD: https://bit.ly/2FxZ570 Check out. The Rolingmetal photo album: https://photos.app.goo.gl/YW7rDL8YYYU...