Late - 6/'86>

Late style brakes are identified as having 1 piston per caliper, the caliper is floating on the hub via sliders and features elongated eared brake pads that are retained by pins.

Girling calipers have M8 13mm headed set screws to attach the caliper to the slider whereas the ATE caliper has stainless steel allen headed pins to secure the caliper to the carrier.

Picture below is the Girling type.

VW T3 T25 Type25 Late Front Brakes ATE Girling