This housing and pickup cap are made from aircraft-grade 356 alloy. After casting, the premium-grade 356 alloy is heat-treated to T-6 specifications, CNC-machined, then black-hard-anodized for optimum durability. A tool-steel drive and Grade-8 mounting hardware are provided, along with detailed directions and adjustment tips. Designed specifically for big- and small-block-GM drag racers, the GM Drag Sportsman comes complete with your choice of six cap heights — one of which is correct for your preferred oil-pan depth. For GM circle racers, the GM Oval Sportsman features an offset pickup designed to maintain adequate oil volume in corners. Ford engines and racers of all types are covered by the Ford Sportsman and its selection of five CNC-machined, billet-aluminum mounts. Please call for complete technical info.