Generally, the RB26DETT is noted for making horsepower much easier when compared to the RB25DET. It lags fewer and has much better internals – for this reason the NEO Model receiving the RB26 rods. The RB25DE cylinder head in the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) https://motor-rb2699863.aboutyoublog.com/33295086/how-nissan-rb26-engine-can-save-you-time-stress-and-money