Wasn't hard to work out mate, your username here on Oldschool and the first Gadabout Mark writes about in this article.
The Geoffrey Clark in the article has a big collection of mopeds down in Napier. I've spoken to him a few times and will pop in to see him next time i'm down there visiting my mum.
I don't have any cables, was just going to get some made because of the motor swap i'll need custom made ones.
As far as tyres go, the only place i could find them (23" x 2") were from here http://www.mopedland.co.uk/chain/index.html#tyre
But as my rims were rotten I'm going with 24", which by my reckoning will work fine.