To locate where the new tubular shock crossmember goes, measure 28 1/8 inches from the rear bed mounting hole forward and mark a line across the frame (do this on both 'rails). Now, mark the center of the 'rail on the line, center-punch the mark, and start drilling, working your way up to 7/16 inch. Once the holes are drilled in the top of the 'rails, install the crossmember and transfer-punch the hole to the topside of the bottom 'rail and drill it out. You can get a transfer punch set at a discount tool store like Harbor Freight that will work just fine.

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