Of you're going for any high end performance that's a really nice car to turbo.
Just have to do your your home work and like getting inside the upper end of a motor (easy stuff)
way easier then an e34 m60(v8 530i/540i)
upgrade springs valves thicker head gasket...etc and push 15 psi
But like they say do the inspections if its bull to began with it'll be bull to the end.