Paul Nalson at Nalson Aviation will find you one but expect to pay 3000 euros for both parts of the noseleg assembly. There is no country that makes this part new with a form 1.
There are also 2 tomahawk noselegs to consider one for the larger wheel one (I know this as the tomahawk II) and one for the smaller one. The smaller one is rarer than the larger but both are very rare. You may need to scrap the aircraft and buy a new one, 7k isn't a lot and you'll have a spare engine.
Good luck.