How?

Well, you'd need to properly remount the front sight - but ONLY if the original slot IS there. If it is not, then it IS Bubba's work and just happens to have a decent crown. And, if the barrel is NOT right, then the points below would cross the line from (heavy) restoration to outright fraud.

Next, you need to find a stock with a JSA/1902 stamp. Buy a junker with a cut stock because you are going to have to work on the front anyway. Buy and fit a stretcher piece for $45. Get an upper band, which will need to be thinned a bit so as to fit the larger barrel. Emery cloth and elbow grease.

I wouldn't worry about the front sight - get the tall 1898 blade - as no one knows the difference anyway. For the rear sight, find a junker 1901 base and file/stone off the platforms at the front of the ramps. Use a carbine leaf if you can find one, as it will look more correct.

Voila - a "five-footer" restoration, at minimal cost and very little collateral damage.

I never say never, but the chance of finding a proper rear sight is virtually NIL.