Does anyone know where I can get hold of a cam locking kit for a Fiat 1.6 twin cam? (ie a petrol 1.6 Multipla)

I've looked on the web and ebay and they are £160+ which is pricey for me just for one use.

Can they be hired or borrowed from someone here or does anyone know where I can get one from a little cheaper?

Thanks for any help.