Depending on your skill level, you could just make a new lock plate with the Chambers internal parts. With your current lock plate, you already have the layout pattern. An advantage to this, is you can shape it any way you want. I have built Chambers lock builder kits, and the process is really no different, and not difficult with a decent drill press. A mill is helpful, of course, but not necessary. It really depends on your satisfaction with the layout and externals.
Matt
