oops, sorry Freaky..something I forgot to mention..they need to be spigot mount ala the picture below.. I have 1 from an old suzuki rotary valve steppy that will be perfect so I might try hunting up another of those
nice little setup eh..this pictured from a Hoddy 100 from early 1968
dunno if it'll work or not but I'm going to give it a whirl for the heck of it