Ask I-CAR
Ford
Ford does not have a sectioning procedure for the front lower rail.
Ford has a partial replacement at factory seams procedure for the front lower rail. The procedure can be found at: www.motorcraftservice.com
For short videos that show how to purchase and access the Ford collision repair information, check out the Ford OEM Information page.
A tool that may be used to find out if the vehicle maker has a partial replacement or sectioning procedure is the I-CAR developed OEM Partial Part Replacement Search.
Check out the I-CAR Collision Repair News article: OEM Linking Pin: Ford/Lincoln - Disassembly Of A Service Part