When ordering a bumper, some options, like mounting holes , tow pin holes , and fog light holes are of NO CHARGE. However, options like BOLTLESS MOUNTING, FRENCHED IN license plate, CUSTOM OUTSIDE SHAPES like 1" or 2 " TAPERS or 4 INCH sides instead of STANDARD 3 INCH, LIGHT HOLE CUTOUTS on side of BOX BUMPERS and UNDERNEATH FLANGES will incur CHARGES.
A normal taper on a bumper is around 4 inches. If you want you bumper to have just 1 inch or 2 inches, that is a called CUSTOM OUTSIDE SHAPE or CUSTOM TAPER Option.