maybe you'll get lucky and find a kilo shoved up under there......... 
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I don’t have one of those otherwise I’m sure it would be cracked around it. I will add reinforcement like I did on the new one I put into my Silverado, using 1/8’ steel rounds and epoxy in the areas of the cracks. That is of course if the thing isn’t too brittle but I’ll know when I remove the front piece by the windshield. If the areas where those clips pop into the dash start to break I’ll stop right there.try to support the middle speaker while you're in there if you can.
Changing a front diff on the friends 08 Yukon next weekend. Wondering what to charge? Seems like it's a $350 dollar job.