Locate the line of spot welds holding the bed down on the body mount channel. The lip of the channel extends about 1/2" rearward of these welds. The front edge of the hole can be an inch or so behind the welds to avoid the lip of the floor support channel. You can always cut the hole too small, and then enlarge it as-needed. But if you cut it too large, the plate won't cover the hole, so always start small.

Owner caption April 2006 · Photo 1243 of 5000