Hi there SOHC,
I've looked around through google a bit and my usual stores (Z1, old bike barn) and I cant track down these.
I've yet to try HONDA but will ring tomorrow and expect a high price.
To Clarify the rubbers that bolt to the head and then hold the carbs
My current ones are crusty and hard as rocks.
My other option is make some flanges from flat steel with some tube welded - then just use a piece of straight hose to attatch the carbs to
Thanks in advance.