Tarmac I think would be the best bet for Nismo with his importing contacts.
Small bits of wrapping RTbiscuit - large things (like a car or a roof ETC) someone like RT Performance, not sure about tints, again imported kits Tarmac, bespoke weird and wonderful electronics Husky.
But bear in mind there are loads of others but those guys (and ones mentioned above) are most active and there work/customer service is going to be more visible on the forum.
Any before you stumble across them and ask..........Uvworldwide..........avoid like a tramps pecker