Why give up the projekt? As it is an import, I would first try RHD speedmaster. Via Import, he has more chances to get a lot of your parts and modifications streetlegal. But the biggest thing I am missing, the catalytic converter!? I see good chances, that RHD will be able to legalise it. And what are maybe 3.000€ on top, to an project with already money dumped in such an amount?