Outlaw Gambler at Classic Old West Arms specializes in original Winchester 1897's. He has a very good selection and many of the 97's have been gone through by one of the four gunsmiths that he uses. The majority that have actions jobs were done by either Coyote Cap or Drifter.
He can also provide you with other cowboy guns of interest.
Check out his website at http://www.classicoldwestarms.com/
or check for special offers in our Classified Section.