Depends what you mean by fit...
I assume you have the modern SE tuner and not the vintage SE tuner.
Pretty sure the existing mounting screw hole will be outside the PRS core locking tuner footprint. Had you had vintage SE tuners, there are adapter plates that you can use to hide(re-use) the holes.
Personally, I replace those particular tuners with Gotoh SG-381 MGT locking tuners.