Thanks to Pipeburn for spotting a Netherlands Co. called Aermacchi Racing, who sell stunning Aermacci kit replicas and parts. The frames are works of art (and I don't say that lightly - see comparison below):
Don't know the heritage of this cool boy racer from the 50's - the frame and tank look vaguely Ducati scrambler. (It would be a great template for one of the Honda 50 Solo's below).
If ever there was a reason to get a grey import, this is it.. theselittle gems are deadringers for the old 50's Zundapps / bantams, and are very modifiable.