Little progress, but I suppose any is good! Had some thin aluminium sheet so laminated it to some  fibreglass board I had. Trial fit of the instruments, not too sure about the switch panel, may have to  'age it down'. Have at last managed to source a chassis. Came up on the well known auction site! Hoping to collect it this week, but as most of the south is still covered in snow and the temperatures not expected to get above zero for the next few days maybe unlikely.