Might be worth a look on eBay?, a few clams listed but not specific as to what they actually are. Failing that JUNKS on Seloc might be able to help or point you in the right direction.
I think the S’s clam is slightly different, Russ, because of the air scoop. I could be wrong though, perhaps it’s just the front section on the roof that is different.
Any chance you could let me know?
I had a look on ebay and contacted an advertiser on there, so may travel up to Stourbridge in the next few days to go and see him. Has anyone dealt with Clarke Holdings (that’s their ebay name)?