Vehicle IDs in PBO files

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I was poking around the server .pbo file and came across this snippet in the mission.sqm file:

class Item2
{
	 position[]={-18688.303,376.65714,25929.211};
	 azimut=-17.083944;
	 id=5;
	 side="WEST";
	 vehicle="Survivor1_DZ";
	 player="PLAY CDG";
	 skill=0.60000002;
	 init="this enableSimulation false;this allowDammage false;this disableAI 'FSM';this disableAI 'ANIM';this disableAI 'MOVE';";
};

Now I've been trying to figure out how to determine exactly which vehicle correlates to id=5. It doesn't seem to be arbitrary, but I can't find a reference anywhere else in the archive. If anyone has any idea as to where this might be located I would greatly appreciate it.

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