The D within the engine code means dual overhead camshaft (DOHC). This is certainly completed by fitting an RB25DE or RB26DETT cylinder head and or turbo to a normal RB30E/T block. The RB25DET is just not typically used. Nevertheless, the two are rather equivalent, and also the RB25 is actually https://nissan-rb26dett-for-sale58360.qodsblog.com/28283671/considerations-to-know-about-rb26dett-complete-engine