Must be a senior moment not spotting the rear fuel tank and yes having blown up the picture I can see the centre longitudinal hiding behind the OS member. Having just done a propshaft job on an RN which ever side you approach it you have the battery box on the NS and the centre longitudinal on the OS much closer than in the picture.
However I suspect the artist has merely updated the original SWB drawing adding the centre longitudinal, 4 speed box, rear tank and 26Va carb, but left the SWB body mount on the NS end of the rear crossmember.
However I suspect the artist has merely updated the original SWB drawing adding the centre longitudinal, 4 speed box, rear tank and 26Va carb, but left the SWB body mount on the NS end of the rear crossmember.