Foundation Stock Recoil Pad

I'm interested in this as well. I would think you could get a gunsmith ground fit pad installed. Most of the common ones Lyman sells are glue on. My issue would be that my LOP would require me to have the stock cut down to make it work.
 
I reached out to a stock maker and he's going to fit a Pachmayr XLT on it, for me it makes the LOP right at 13.5". It just seems that since some people shoot large magnums that there would be an off the shelf option or an option from Foundation.