The D inside the engine code means twin overhead camshaft (DOHC). This can be achieved by fitting an RB25DE or RB26DETT cylinder head and or turbo to a regular RB30E/T block. The RB25DET will not be typically used.It’s not unusual for GT-R fans to sidetrack and talk about Z-tunes and 400Rs. Lovers in the model are totally informed of such restric