No. Disco 1 for a start can be twin circuit or single circuit for a start... and some are different thicknesses for vented discs... I think they all have the same bracket holes but I stand to be corrected - you can for example fit single circuit Defender calipers for thick vented discs on a none ABS Disco, if you ordered the same for a Disco you would have twin circuit ones only because it would assume you are ABS fitted....