Need to find beetle synchro rings, pls advise

Friend needs synchro rings for his race car(s), must be "the later type", whatever that means.

Apparently our local suppliers don't have them in stock and can't get any more of them. Someone told him EMPI stopped making them.

I must admit I don't know much about VW trannies, or their differences. At some point they changed the synchro ring design.

I would appreciate a link to a source that carries them.

Thanks

Jan (Remove "palikka" from my email addy if you wish to reply to my email)