Mopar34 You could be right---but then again---right now the box extends about 8 " past the end of the frame. And its only held to the frame by six 3/8 diameter bolts. and the box only sets about 3/4" behind the back of the cab section. I was thinking more in terms of personal protection. At least the bumpers would be attached to the frame. I would rather have the frame take the lions share of a rear inpact, rather than the sheet metal, and then me. Probably in a high speed accident, the bumper would do very little, but its the in town 30 MPH crashes from behind that concern me.