Rimmer's also show RH as XBJ105500 for Rover 75 V8, now superseded by XBJ105501 for both Rover 75 V8 and ZT260
Left Hand are shown with different numbers, namely LH as XBJ105510 for Rover 75 V8, now superseded by XBJ105511 for both Rover 75 V8 and ZT260.
https://rimmerbros.com/Item--i-GRID004263
David