Sure looks SWEET Tango but I hope that you remembered to rotate that collar down on the kickstarter shaft before you assembled it or you're gonna kick yourself in the head when it doesn't return but my guess is that anyone who can pull off a build that nice, doesn't forget the little things.
I recently and finally completed my 74 H2B as my go-fast bike. I didn't want to touch my 75 so the 74 was drafted for a full on port job, cut pistons, heavy plates, vm34's (got a set of 38's too) and all the rest of the package. i'm getting the jetting down tighter and tighter but it's a process that takes a lot of time and I've been a little short on that.
Your build looks great so post up some pics when you get it up and running. In the meantime, for moral support, here's a couple pics of my B. I installed the cans after more then a few blasts down my street just so I could announce it's presence(after installing my foam filters of course)!
jeff