You can't attach harnesses to the seat if they don't come with a mount. Even if you made your own, would you really trust it? If your getting harnesses, you NEED a roll bar, not just for mounting but you don't want to flip and have that ceiling caving in on you strapped into those suckers.
A ZX3 and SVTF gone but not forgotten. Dark side complete, 06 Civic Si coupe.