Thats a really good idea actually. flare it at 37 deg and it will mate up.
There is a guy on Vortex that shave the piss out of the engine bay, and all his lines are SS hard line. he used flare nut fittings. it came out pimp. its just like making brake lines just bigger in DIA. that would be trick too, and you could make them tight to the block and out of the way too with hard SS line.