Been questioned before. If I remember, the consensus was no!
Aluminium body to cut, structural flexing, having to ensure that all fixings will not cause the aluminium to 'rust' (well, not rust but alu does react when in contact with some other metals).
Not putting you off, but wishing you good luck!
Steve - 2002 1.4SE petrol, Silver, black/black interior, Then an identical replacement 2003 A2. Now a Toyota Corolla 1.6 T-Spirit