Duncan the FRS Registrar on the RSOC put a set of Cossie offset wheels from his Escos on his FRS one afternoon after a similar thread on the RSOC about 18months or so ago - basically they will fit but will stick out of the front & rear arches by a good inch due to the cossie wheels offset - spacers will only push the wheels out more im afraid

The only wheels that will fit the FRS properly are those with an offset of ET40 to 42 like the Compomotive MO's & OZ Superleggera's for instance