To demonstrate what sort of damage this stuff can take have a look at this video
The pipe made a rather large noise, however the damage was suprising...
The force bent the aluminium front edge up, it just needs to be tapped out straight with a large hammer

The damage, you can see the scrape mark. The 2 holes at the top are where one of the mount points are

Close up of the damage, very suprising how little there actually was

Close up of the front edge
