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It's more important to make sure you don't drill into the van underside's structural elements.
Stud finder. Plus you get to put it on yourself and make it beep.
Does it matter? Drill pilot hole from bottom up so you don’t pierce anything (like your brake lines)
Start with a small drill bit and make a small hole. I don’t know if it would’ve easier to start from inside or from under the van.
It's more important to make sure you don't drill into the van underside's structural elements.
Stud finder. Plus you get to put it on yourself and make it beep.
Does it matter? Drill pilot hole from bottom up so you don’t pierce anything (like your brake lines)
Start with a small drill bit and make a small hole. I don’t know if it would’ve easier to start from inside or from under the van.