I have had that happen before, Jax raceway the mirror came off and hit me in the side of the head.
The mirror in the Celica I used to own was attached to the roof and I could not keep it on the roof because of the stereo, Every time I turned the stereo up, the bracket would break off the roof. I guess 162db will do that.
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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft