Uploaded September 2019 | Updated September 2026, 18 hours ago

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This testing has been done before, but every thing I found was on trucks with a shorter box. The truck is a 2003 Chevy 2500HD, 6.0 liter, 4x4, extended cab, full 8' box.

Check this one out: youtube.com/watch?v=r3aqHbD-O9E&feature=related