Sorry I am in Leesburg VA USA. If i can find out the type of dyno I can look for a shop back here as well
Among motorcycle shops/dealers in the US, Dyno-Jet seems to be the most popular bike dyno.
I would bet that Krazy Horse uses a bike dyno with just some platforms on each side to support the front wheels when in place.
You could use a car dyno that most "tuner" shops have, but I'm not sure how the rear drum is set up. If it's a full width drum, then your M3W would work, but if it has two rear drums on car track centerlines, you may not align with a single rear wheel.
If you get a hold of a independent shop that wants to have some fun, he may offer to set something up just for grins and giggles.
Good luck and I would be interested to know the RWHP of a M3W in stock tune.
Has anyone ever posted here what the RWHP is of a M3W?
Good luck with your tune.