In the "160 Rationalisation and Installation" sticky thread in the EAW forum there are links to the UAW160 installation files.
If a player has installed part one and then part two, then they will have already installed Carrier Air War (CAW) when they installed part two, and it is available for selection with the filemanager.
One thing that I recommend is the use of the "old map" exe to fly CAW. The "new map" exe uses a very large file which needs too much scrolling for target selection. The big map is great for online play as everything is well separated
CAW is a WIP started by Moggy and many other modders in 2006 or thereabouts. I took the available theatre, but used the SPAW TMods to have raised deck carriers and many more TMods. I have not tried any Career games, but I will, to see what happens.