I had it and the other original in the same bass, an SB R-80, and regardless of which pickup was in which position, they sounded badly mismatched. The Armstrong was a lot darker, sounded nothing like the pickup it was bought to replace. The Armstrong had two full length coils, not a Precision design under the cover, for a start.
In the end, I traded the working original MB for another Armstrong (I knew a guy who had a SB-1000 with a dead coil), just so I could have two pickups which sounded somewhat related to each other and make the bass usable again.