That's a sh!t Ian.
I do know where there's a MZ 500R Saxon (Rotax) going if that's of any interest. Bit down on power from the 650 BMW, but they still go well enough. Otherwise, I've always thought the CCM's are quite an attractive proposition. Nice and light , Rotax or Suzuki engine, high quality components, but apparently slightly iffy build quality and electrics. They go for very reasonable money too. Dammit, I've almost convinced myself.....