Just been looking at the engine no thread so I fished the v5 out for the Astra that donated its engine to my Corsa.
It was registered on 1/8/87, E reg,making it,if I remember correctly,one of the first 16v GTE's
However,the engine number is 14048572,making it much later,also it does not have the Coscast head as far as I am aware.
What could this mean? That it was a ringer?