I suppose you can just take the tensor product of the spacial structure with the units? So energy would be R tensored with V^{N.m} (which of course is isomorphi

I suppose you can just take the tensor product of the spacial structure with the units? So energy would be R tensored with V^{N.m} (which of course is isomorphic to just V^{N.m}), and torque would be the space of axial vectors tensored with V^{N.m}.