But the RG200s dont have
TRS trems, they have "Fr double lock" trems according to the ibanez website...

So whether an OFR will really fit or not is a gamble...
I know this because of a lot of research I've done lately, but I was wondering how can a Floyd be single locking? The bridge locks the string in the clamps(Bridge) right? How else will the string stay in the bridge without the clamps? Or is there some sort of ball end feed through it? Anyway what I would do is somehow find out if a TRS will fit, and if so then logically an OFR will fit as well.