I have a hollander interchange that lists 2 different 2.3 C4 bells for the mustang II. I am looking for a whole 2.3 C4 mustang II for a holsett HX-35 monster. I have one unconfirmed report of one 1974 2.3 C4 car and i'm trying to confirm the transmission - Still waiting on the seller for data.
i was told 74 pinto and earlier are your best bet... But honestly, I've talked to hundreds about the 2.3 C4 and tracked down 20+ cars and still haven't seen or found or confirmed one in a II.
Good luck.