I believe (/have read) the Mk2 Cortina Savage used the Essex 3 litre.
Mk2 Perana Cortina were V6 Essex.
See also
http://perana.org/cortinamk2.asp
Capri Perana and Granada Perana were V8. (Std engine type +1 size approach)
Just Google it...... and see what turns up. Question must have been asked before.