So I am swapping in a NP219 out of a 1980 Wagoneer. Seemed to be a good fit since my axles don't have the vacuum locking mechanism. This transfer case does not use vacuum either. 4Hi, 4lock, Neutral and 4low. Does anybody know what order these gears are in and which gear I should be using on pavement? Feel stupid for asking but that's better than ruining stuff.