All ford sixes have the same valve arrangement (E-I-I-E-I-E-E-I-E-I-I-E), except the 240/300. I do belive that the hudson 308 (maybe others?) had the same. The 308 also had the intake/exhast on the passenger side, like our little sixes. Be a little spendy to get ahold of one of those manifolds, though Clifford does have them. Just a thought.
Edwin