very little really. precisiongunworks.com does a fine job. they leave the wood about a 16th proud also so its just sanding to finish except at the tang ends. there I had to reduce the wood quite a bit on the bottom but not so much on top. the hardest part of fitting is drilling the tang screw hole straight enough to engage the bottom hole. started small and it worked.
now to drill and mount the butt plate. after that i'll make a forearm for it to match. haven't decided if I'm going to checker it or not. body is failing me and checkering needs top of your game.

the consolidation of the states into one vast republic, sure to be aggressive abroad and despotic at home, will be the certain precursor of that ruin which has overwhelmed all those that have preceded. Robert E Lee
~Molɔ̀ːn Labé Skýla~