Hey wardy, saad was making a few a while ago I reckon, his username is ukstar76 on eBay and I have purchased from him previously (all legit).

Here is a link to the side badges he makes, maybe shoot him an email to see if he has any boot badges. That's if you prefer the metal ones, the plastic ones (form new datsun parts) will probably survive fitting and removal more than the old soft metal cast ones though so maybe just go with those?

saad AKA ukstar76 Emblems