IMPORTANT: Forgot to mention how I managed to do this while maintaining the OEM length/position of the assembly. BEFORE you cut/weld anything (and the cutlines around the beam are marked) do the two bottom side(in pic) cuts first before you weld on the lower (arch) center section. Remember to also subtract the thickness of the end cap material you chose, if you cap them. These two undercuts will make cutting out that center section a breeze after the new arch is welded on, ensuring that OEM dimensions of the unit are maintained.
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