I'd like to answer, but I bought the new siren/alarm (5124443AA), but I was sent a 5124443AB.

Before I take apart the cowl cover and wrestle with the windshield wiper arms, can anyone who has replaced their siren if the 5124443AB will fit the car?
Notice the bolt rather than a bolt hole in the picture-I would gather that if the original is attached by a detachable bolt than this will work if I buy a nut.

Any input as to whether it will fit?