The D while in the engine code stands for dual overhead camshaft (DOHC). This is accomplished by fitting an RB25DE or RB26DETT cylinder head and or turbo to a standard RB30E/T block. The RB25DET is not normally used. The RB26 includes a Forged-iron block and aluminum heads, furnishing a fantastic https://andrevutsp.madmouseblog.com/8709112/buy-rb26-engine-things-to-know-before-you-buy