Fully boxed frame

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#16

05-15-2007, 04:35 AM

freekyFX4

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Plus the frame rails on the Super Duty are almost 7 mm thick...much thicker than the boxed frame rails on the F150.

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#17

05-15-2007, 07:38 AM

keith97xlt

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you need the frame to have a some flex,especially when you really start loading up the bed.

Last edited by keith97xlt; 05-15-2007 at 07:43 AM.

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