Kageki-Racing - A straight cut 5 speed dog gear set for Nissan FS5R30A gear box (used in vehicles with RB25DET, RB26DETT and VG30DET engines). The picture is a version for 2JZ engine
GTS-T / GTR R32-R33 5 SPEED DOG GEAR SET - LARGE SPLINE – JR's Performance Products
OS Giken 3-Speed + 5th Close Ratio Gear Set - NS201-GL Nissan Skyline GTR R32 R33
How a Dog Box works - YouTube
straight cut gears? - Nissan Forum | Nissan Forums
Rb25det PPG dog box - For Sale (Private Car Parts and Accessories) - SAU Community