I had one of those Green bearings, is now sold. Pretty sure they are NLA now, as are the Timken and SKF flat ones.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

another pretty obvious alternative is to source a similar flat faced thrust bearing and either sleeve the thrust carrier bigger or machine it down to suit

or modify the wok and make one of these work http://www.eeuroparts.com/Parts/84495/S ... r-4926028/

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did I tell you that I won a trophy?

I have bored out a hard diaphragm thrust plate to clear a 5203 double row bearing's side seal. It is 17mm ID, so will need a bush made to fit the 5/8 shaft. It will go in my car at Xmas when I swap gearboxes.

Having said this, I put an orange dot clutch in my car 10 years ago with an RHP brand 7W5-8 current style bearing.
It is still fine, mind you I don't sit at the lights with the clutch in.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.