AFAIK the big differnece between 200/300 series RRC and Disco was that the bumper had the extra "over riders" which are in truth covering the front end of a crush-can and a hi-lift style jacking point as a bonus.
The chassi mounts are the same and the width between the chassis rails, the big question is whether it will fit between the crush cans. I'd say it's worth a try, the RRC one does but you need to cut the plastic over-rider trim in half.
