In general, the RB26DETT is known for creating horsepower less difficult compared to the RB25DET. It lags considerably less and it has much better internals – for this reason the NEO Model getting the RB26 rods. The RB25DE cylinder head from the A31 Cefiro C33 Laurel or R32 Skyline (aka: https://manuelxumeb.madmouseblog.com/11635826/getting-my-rb26dett-engines-for-sale-to-work