I put a Boyd's stock on a Savage mk2 and the only thing I had to do was clearance the barrel inlet slightly at the fore end. I used a socket wrapped in sandpaper and ran it a few times until I was satisfied.
I've got 2 other Boyd's stocks and they needed nothing, drop in.
I've heard people say lately that the quality has dropped off, can't speak to that. Last one I bought was maybe 4-5 yrs ago.