Those Nortons look awesome! I don't think I'd be strong enough to hang on to one of those beasts though.
I sold my Sherpa T this spring, and currently have no trials bike to ride. I didn't ride it at all last year so thought I'd offer it up for sale. Somebody bought it, and now I have regrets. Might get another vintage trials bike one of these days.
In the meantime, I have this:

It was cheap and it looks real nice with the new plastic and all. The beauty is only skin deep though. It's going to need quite a bit of work before it's ready for the track. So far I've fitted it with a new Wiseco piston, had the cylinder bored to match, got the stripped drain plug fixed, got the Konis rebuilt and put back on the bike right side up (they don't work upside down), and fitted a new Uni air filter. Much remains to be done, but I should be ready to test run the bike soon.
I could start a build thread on it if anyone is interested...
Debby