I tried Speedy a couple of years ago, they had non then, yes, they are very rare, I had to find one for mine, I was lucky to find one in Norfolk.
Though I had to have it rebuilt, that cost £130, so £200 for a brand new one seams a very good deal, if it's ready to bolt on ?
Jimmy, do let me know what else you need, as I have quite a few spares.
Jules