On ne tainnut ajaa tolla "vakio" kannellakkin, kun se on aikalailla kaikissa googlen kuvissa kiinni..
Myös tällänen teksti löytyy volvospeed foorumilta:
block and head must be available as a consumer engine from manufacturer. Revised in later years, internal modifications allowed within factory casting or casting sizes of engine used. Same goes for the head.