Doesn't seem to be much info about it but I'd imagine it's possible.
This post here (
FS-2 Ibanez EXF 5 pickups) says that the pickups that are in the sr305, called EXF-5's, can be directly replaced with MK's, meaning the MK-5.
I don't know if that's true or not but it does sound reasonable. Maybe PM the poster of that thread.