According to the Accessory Shop section of this web site, the Big Heads in both standard and Fury versions are now currently unavailable. I had one of the very last of the most recent batch after having to return a faulty Fury head, and from talking to the guys at the shop, they had a few problems with them and weren't about to have any more cast up. There was an un-machined casting in one of their display cabinets which might be usable with a lot of work, so give them a ring to see what the current situation is.
The stuff is still around, I know only about 200 Furies were made and shipped to the USA, plus 20 Big Head Westerners, and not many have found their way back, but that doesn't take into account domestic Big Head Bullet sales. A restored Big Head Bullet recently sold on ebay for £4330.
Someone who does seem to be able to find the Stuff is Paul Henshaw of Performance Classics who uses Big Heads on his racing Bullets, he might also have an ear to the ground for complete bikes for sale. If nothing else he can build you a seriously together conventional Bullet engine. Don't forget a decent set of 350 crankcases can be converted to 500 spec. Contact details here:
http://www.midlandbullets.co.uk/perform ... assics.htm
Mark M is right about the relative scarcity of even the pre-Big Head 500 Bullets. I owned a restored '57 version for a while which I perhaps foolishly sold on to finish a project, though to be fair it had a few issues and needed more TLC than I could manage at the time. It was sold on again afterwards, and the current owner in France has since treated it to a proper ground-up restoration. His research showed that RE only sold less than 300 of the 500 Bullets in the UK that year.
Happy hunting!
A.
