I think you need the Surge version... the area around the pivot is shaped differently, and I don't think the Wave's bit driver would lock up properly in the ST300 body. (please note that I haven't actually tried it; I'm just guessing from past experience with other tools.)
the bad news is that there are far more Waves diassembled for mods than there are Surges, so the Surge bit driver is going to be harder to find.
the good news is that I think I have one to offer. PM me and we can work out the details.