These bedsides have a 4.5″ bulge and a 3″ rise. Was styled after the old Toyota stadium team trucks. These bedsides do not have a fuel fill area built in, but we do offer a universal gas pod for an additional cost. Does require the removal of the factory steel sides, can bolt them on or bond them on. And the items are all “Hand Laid” to ensure quality workmanship and prevent warpage,and are all made here in the USA.