Where are you located? Several members here on SGW do incredible stock re-
Here's one on the west coast:http://webpages.charter.net/cworthing/
And Doug whose shop is about 30 minutes from me here in the Cleveland, OH area:http://www.ccgunstocks.com/
I have an old Remington 11-48 as well (in 16 gauge) that I inherited from my Dad. I wouldn't think of selling it. I probably went about 1000 times on various hunts with him in West Virginia while one of us shot that gun. A few years ago I had it re-blued, springs replaced as needed, and tuned up. The stock is in decent shape, but looks like it would be incredible if re-finished. I will be talking to Mr. Carpenter about that soon. I had planned to do it myself, but have taken on a new job and am pretty busy. Besides, I'm a good wood worker when it comes to cabinet building and refinishing, but have never done checkering. So I'd like to get it into the hands of an expert for that.
Mine, like most old 11-48's, has the pressed flat diamonds (really rectangles). I've heard these can either be cleaned up and made to stand out better, or pointed up in the traditional diamond pattern. We'll see what Doug recommends.
In other words, if your stocks are not split at all, I'd really consider re-finishing them. 11-48 forend pieces that are not split are hard to come by. Dents can be steamed out, scratches removed, etc. Some of these old Remingtons had very nice wood grain for a field gun stock. You might find a replacement stock to function well, but not have as nice of a grain pattern. It certainly wont have the memories and patina. A good refinisher can keep a litle of the patina but make it look otherwise new.