Just to confuse the matter even further , in the late 60s/early 70s a London Centre member had an Alfa Romeo twin cam engine in a 4/4, but this is well before the dates of this car of course.
This was at at time when the 4/4 was pretty underpowered with the standard 1500cc pre-crossflow engine, and if I remember correctly it entered (and won?) a concours.
