Chops right Dave.. I know where you're coming from because Scimitars were mostly ford but the wheels were 4.1/2 pcd ie not ford ..heavens knows why.
Scimitar wheels can be wolfrace slot as we have seen, steel 5.1/2 j on the old SE5 Scimitar or a hybrid steel with moulded insert also 5.1/2j fitted to the SE6 and 6A
Scimitar wheels are available from Ebay of course and Will Sparrow in Tamworth and Graham Walker in Chester
www.grahamwalker .co.uk or Queensberry Road Garage in Kettering
www.qrgservices.co.uk. They are all 14" so you will need to fit a 60 profile tyre to keep the rolling radius down to similar to orginal Rascal tyres... not sure about the offset and spacer requirements but the PCD is OK
Best site for fixing the OD of the wheels with tyres is the
www.kouki.co.uk/utilities/visual-tyre-size-calculator have fun trying different combinations before you buy.
Mike