Me too. It is a 75 H2 750. Its much faster, easier to work on and gets tons of attention. Smells great too! Here is more of the bike along with my honda DOHC.
That's beautiful mate, I know where there's one in similar condition, but the bastard won't sell it to me! And your DOHC isn't just one of those "Plain Jane" fragile 4's, but a beautiful CBX! Well done mate, and leave that 400F for your "missus"! Cheers, Terry.