Magnum head and exh manifold ID

A friend of mine dropped by the other day and I showed him a pair of magnum heads I got off of a 5.9 (360). I asked the same question to him about the 318/360 magnums. He is a Chrysler tech at a local dealership. He said they are the same head. 302 and 308 are numbers on all the swirl port heads from approx. 86 to mid 92. I have looked at a lot of trucks and vans at the JY and I have seen the magnums in 92 vans and swirl ports on 92 trucks. According to the new Mopar Performance Manuel, the 5.2 magnums (318 ) have a NH on the head casting under the valve cover and the 5.9 magnums (360) have a CF. Now, I have seen some of the early 5.2/5.9 magnum heads have the numbers 302 on the intake runners, none with a 308. I am not saying they don't exist, I just haven't seen any on a magnum engine. I have seen heads with the letters NH on 5.2 and 5.9 engines, but never a CF. Most of the heads have numbers and very few have the letters. None of the numbers I have seen match any of the numbers in the MP Manuel. So far every magnum I have pulled an intake and head on, looks just alike no matter what the numbers or letters. My conclusion is that the 5.2 and the 5.9 magnum heads really are the same casting....valves, ports, manifolds, and chambers. Someone show us some pics of the 5.2 and 5.9 with the intakes, valves, and chambers compaired to each other.