Compare to the SR20, oil delivery of RB26 must be done much more carefully because of its structure. However, RB26’s oil pan is also used as front diff case and it has complicated shape. Since it is hard to make bolt-on kit, we take trade-inn modification service. IN our modification, while its total capacity is enlarged, height of oil pan is set equal as engine member in order to keep it from hitting damage. It is highly recommended to use this with RB26 oversize oil pump.