there is someone in QLD casting brand new Goldstar BSA heads, infact hes doing the whole engines. Ive seen the heads in the flesh and they are good and are sand cast by the looks of it. Dont know who it is who's doing them, but if you contact 'Mike Reily BSA's' in QLD (think i spelt his name right) he would probably know who the guy who is casting stuff is as Mike is a BSA gold star expert so he would know for sure. I also know someone else who a had some custom made barrels done somewhere in Australia a couple years ago when he was building a custom V twin AJS/Matchless . I do not know where but i think they used to advertise in Just bikes. The price was really cheap too. There could be a lot of money in reproduction improved DG, FMF heads etc if someone wanted to get into that.