[1969 GMC]

i have just an am/fm/cd head unit in my trucks glovebox, and it hardly ever bounces...but I really need to fasten it down somehow. when it does usually skip, it hits the hinge, and not the soft cardboard, but it doesnt always do that. probably should also cut a hole in the back for the heatsink, it gets pretty toasty back there and I dont want anything to melt.