These rear sump Buick big block oil pans are made from heavy gauge steel and pressed into shape just like the original pans. Special features include one quart additional capacity, plus a beaded pan rail for additional strength and gasket security. Also, the pans are slightly reconfigured to improve clearance when using main studs on the front cap. Dimensions are the same as stock pans in most areas with the exception of the back of the sump, the “kick in” was eliminated in order to increase the capacity. Uses stock pick up tubes. Please note these pans will not work with cars that have an original single exhaust cross over. Dual exhaust or a custom cross over will be required. Includes a metric, magnetic drain plug and plug gasket. Available in black powdercoated finish.