Maxxhaul headache rack on GMT400

[Vortec 350]

Hey I'm looking at a Maxxhaul adjustable headache rack part number 70234 for my truck. I'm wondering if anyone has one on there truck and how it conforms to the contours of the GMT400 cab. I know this is a universal rack but I don't want to buy it and realize it is way off. I plan on modifying the mounts to make the rack stronger. Anyways just wondering what you guys think. Thanks!

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[Vortec 350]

Well I guess if y'all don't mind posting pics of your racks that would be appreciated as well. Thanks!