Peter,
I was going by the photos in the article (comparing as found and as restored), and the text quoting the owner/restorer which says "I decided to make the car a Series 1 lookalike. It wouldn't be too difficult with the grille being the only main difference. I like the twin headlamp look as well". The grille in the finished car is a bit hard to describe but you might say it is banded horizontal geometric louvres. It is certainly not the late grille as appear on the wonderful Volumex coupes.