Just to clarify a bit, although both the Fleetside and the Stepside bumpers for 55-59 have the dip, the Fleetside 58-59 has a different curvature to it and uses different brackets.
Mike ------ 1958 Chevy 3200 Fleetside 1958 GMC 100 Wideside ------ Did you get free advice today? To donate to this site using PayPal is fast and EZ. Click here: http://www.stovebolt.com/office/thanks.html