While proving myself wrong about something I came across this photo of a Sportshatch replica - registered as a 1256 Viva estate, it seems to have a genuine nosecone as opposed to a Magard one. Lights aren't to my taste, but probably less costly than sourcing proper Cibies for it.
Vauxhall Sportshatch Droop Snoot 57VNO - photo by Retro-Motoring