i would have thought you could do that quite easily, in fact i may do myself if it turns out easy, i think the subframe is part of the bottom bit of the seat and i dont think it come off, i took the whole lot apart not too long back to change the seat covers but i cant quite remember, you could probably mount the tilt handle on the other side of the chair and if not then the seat comes into two pieces really easily anyway to swp it all round, its blatently doable,