You will have to remove the rails on your bed sides, they sit too high.
On the back end, the bottom of the angle was 1/2 in. from the edge of the bedside where the bed cross piece connects under the tail gate.
On the front end, the bottom of the angle intersected the loses bolt hole that the front bed panel bolts to.
Take a second look and the pics and I'm sure it'll be more clearer:
http://67-72chevytrucks.com/vboard/s...&postcount=144