Just installed one in my High Country yesterday. Good advice to measure repeatedly. I used an eighth inch bit and drilled a pilot hole. First though, I used a stud finder both inside and outside and marked the studs with painters tape.....then, this is me holding my breath, I drilled with a 4 1/8" hole saw from the inside to the backside of the exterior, then finished drilling from the outside. Very minor splintering on a small portion of the very edge of the exterior easily - dressed the rough edges with some 400 grit wet sandpaper. You can do it! Easy peezy!
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2017 Ram 3500 Dually
2017 Montana High Country 310RE
B&W Patriot Hitch
Love the smell of fresh coffee & diesel in the morning!
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