The D during the engine code means twin overhead camshaft (DOHC). This is attained by fitting an RB25DE or RB26DETT cylinder head and or turbo to a typical RB30E/T block. The RB25DET is just not ordinarily used. HKS has also made a completely new camshaft position sensor that has a https://rb26-motor-for-sale19973.getblogs.net/60708001/indicators-on-rb26-motor-for-sale-you-should-know