i wanna run a flip down monitor in the back of my truck, and i wanna run a really large one, like a 21" inch. however the headliner has all the countours that would cause it not to mount flush and leave gaps. i know they make trim riongs for this sort of thing but ive yet to see em for a silverado. i dont really wanna have to fab somethin up, but it looks like thats where im headed. just wanted to know if anyone had seen an overhead monitor trim ring for a silverado.