Two pieces of thin plywood cut to the right radius with polystyrene bonded between them forms the mould. The polystyrene was then scraped out to form the 'hollow' and then covered with filler to allow it to be sanded smooth. Packing tape has been used rather than paint to save time. All that is needed is to wax the tape

 First one, three more to go! Will need trimming down in width and length, plus a little sanding but glad to say it released from the mould with out destroying it.

......And the cardboard templates. Drivers side done, now the passenger side.......

About time I had a floor to sit on so have brazed up a lightweight frame from thin angle to add support. The floor will be made from fibreglass sheet and over-clad with thin aluminium. Cardboard templates will be the next job.

I have had no luck finding suitable mudguards with the correct radius for the 15" wheels, so have made up a mould. With the narrow tyres I think close fitting ones will look more the part, with the front ones mounted to the hubs to turn with the wheels.