A75 rear shockers spacers

[jcdjcd]

For my 1970 (pre-OIF) BSA A65 Lightning, I cannot find the below 2 parts anywhere.  Can anyone make / supply them?  Or give me dimensions of these parts, so I could get them made locally?

68-4286: Spacer left hand, mudguard bridge.
42-4907: Spacer, Right hand, mudguard bridge.

Thanks
James Davies
Tel.: 07517204526