i'm 99% sure you just unscrew the plastic plug and screwed in the versa, i'll be honest, i've only seen it installed once and at a quick glance it looked like it was just screwed into the same hole. But honestly I didn't stare at it, and actually questioned the need.. see below
the part i'm curious about is why do you want one ? are you currently taking on water and quite a bit of it ? On my XP I'll be honest, I probably took out the drain plugs maybe 3 times over the course of two years, and 2 of those times it was out of sheer boredom when I was poking around the garage looking for something to do so I unscrewed them and put them back in a couple days later.
(my bilge was always bone dry, at best a few oz of water even on a rough day)
on my yami I owned for two years the only time I touched the drain plugs was to screw them in the day I bought the ski, on my 4 stroke the only time I touched them was when my daughter flipped the ski, haven't thought about them since.