Are stock SH3 1.4b and GWX units cpompatible?
 

I am going to install GWX and replace their units with the same and many additional ones from my Sink them all mod for stock SH3 patched 1.4b which fixes guns and their places (dat files for additional nodes and nodes locations are chaged). But, will they compatible to GWX if they made from stock units?

I think GWX overwrites the .dat files extensively and you may have problems unless you are prepared to edit the .dats again you won;t be able to just drop your .dats over the top of GWX as there are a lot of new units included in them and you would likely get a CTD rather than be able to play the game.

Highly unlikely they will be compatable :nope:

I've got some GWX units installed in my Museum and they work fine, What is the problem?

Straight dat for dat replacement should be fine
Remember to include new EQP files for your new guns though