Quite responsible people today along with the engine is operating perfect following a couple of months of use. Really advisable.The RB25DE cylinder head from your A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) might be used. The RB25DET (through the R33 Skyline or C34 Laurel or Stagea) head is likewise used, having said that an exterior oil fe