We offer rebuilt VG33 and VG34 short blocks converted for use in a Z31. All stock components will bolt up, and the oiling system is converted to Z31 style and includes a stock turbo oil feed location. The oil pump included is a new Nissan turbo automatic pump for the best possible oil supply. The motor is balanced and includes a Z31 crank to make installation easy. Specify which style crank when ordering. Forged parts are available. The VG34 includes new cast pistons in the price.