Hi,there is an original oil tank on ebay (in Greece),and an original mudguard tail end in (UK) with holes factory drilled for the contract plate so definitely of a 3HW,I have a scrap cylinder head lying about some where,will try and dig it out and see if the decompressor assembly is still on it.

Thanks Steve, much appreciated, will investigate, great if you have a decompresoor,

email (option): r1155n@gmail.com