Straight from the Bendix catalogue.....
All the 888's run with MA19 rear pads except the Roche Replica (1991-) which runs MA6's.
The MA19 is the same pad as used on the rear of the 748/9*6 breeds.
The MA6 is off the the 750 Sport/Pantah generation.
If your interested, the front pads are MA66's which are the single pin pads of the early 748/916.