I have a Winchester 54 sporter that I want to shoot Cast Bullet Benchrest with. The gun comes factory drilled for the rear sight, so that works, but I need to match it with a front sight without destroying the collector value by removing the original. The base would have to be two pieces. The bases out there are all drilled .750 or larger, with one split, so wouldn't work. Ideas, directions to go, info on manufacturers, etc welcomed. I do have various front sights in my possessions, or can go with another. Thanks in advance for your input!