If they are for your RTS 3 refurb, I think they'd look Just don't know about their duribility.
However, when I was getting forum members opinions and advice on a Disc Drive, I learnt their lifespan isn't that long....3 months on average. Have a look back through MTB chat for my Disc Drive thread.
I thought they would look for my GT but they are disc compatable, so i wouldnt want to run disc wheels on a none disc bike, but i think they might loot sweet of my '06 Cannondale F600