Wrong, it's not a MTB fork, there are no canti mounts nor holes for canti mounts that have been removed. There were two generations or RockShox road forks- the ones in the pictures, the SL Roubaix, that look a lot like the mag21 with a bolt on brace and the ruby that has a brace that's one piece with the lower legs.

Take a look at 1995 and 1997- http://mombat.org/Rock_Shox.htm