I think if you blend the siren with the engine noise you will be able to hear it when you are in a GV.
You could convince HTC to include a external siren noise for the Stuka so when one dives on you you get a warning to find cover.
Basically, you must have the siren to be able to hear it, if you want to hear it from an enemy Stuka I think it has to be ext, I am not sure I just made the siren cause I couldnt find it and didnt feel like whining for one.
Anyway, if you think it is good tell me, I like to know what people think of my precious!
