Most likely there's not much difference in the illustrations. F1 teams are paranoid about giving away secrets.
We used to use F3000 engine bits for photography at Cosworth. In 1996 I showed the engineers a book Renault had produced with loads of engine centre pics. They poured over it for hours.
Even earlier they told me they had altered a cutaway drawing and later heard the guys at Ilmor - near neighbours to Cosworth - had wasted a lot of time and effort trying to make the drawing work.