|Originally developed on our 2JZ race engines to save additional weight, we had many requests to developed these for the consumer market. The foundation for these stunning covers is a billet aluminum base that is CNC machined to offer proper gasket sealing with the head using the factory gasket. We then hand form a smooth sheet metal top that is then tig welded before being mirror polished. The result is a set of valve covers that are 2lbs lighter than the factory units, and more visually appealing.The fill cap version includes -10 fittings on the sides plus baffles, the non-fill cap version includes -12 fittings on the top of the valve cover. If you need a custom setup, please contact us for a quote. We can accommodate just about any setup needed.