Since it should be close by, maybe swing over and look at the Montana Vintage Arms version, claimed to be parts interchangable with originals. It may come down to the look you want, C Sharps may only be available thick sided?
Of the handful few of each that I've played with, I would give the MVA a slight subjective edge in fit and finish, and function smoothness. If you go with the C Sharps and are doing a custom build, you might inquire with them about fitting your barrel, dovetails, drilling and tapping, case coloring, might even be able to look through semi inletted blanks to see if anything catches your attention. Best of luck with it.