This bed centre cross sill is made to replace the rusted or damaged cross sill on your 1963-66 Chev/GMC truck. This cross sill is made for Chev/GMC fleetside trucks with either a longbox or shortbox and a wood bed.
1963-66
Chev/GMC Fleetside Truck
Bed Cross Sill
Centre
Shortbox or Longbox w/ wood beds
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