Hi Col,
Before you buy, I highly recommend talking to Joshua Bunn about making you one. He recently made me a 10 kg CW for my G11 - it wasn't SS as I wanted to paint it to match my Losmandy weights. His price even with shipping from WA was far cheaper than Bintel. I believe he has recently made SS CWs for other IIS members, so should be able to assist you.
http://www.iceinspace.com.au/forum/s...d.php?t=167564