I think that the dumbell pins came along in around 2006 or maybe a little later, when Morgan changed from Lockheed to Caparo callipers. So I reckon your split pins were the standard fitment for the callipers in 1996 and do the job.

Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900