I requested for just a quotation with a Sunday afternoon and received it inside the hour. That’s excellent customer support! T.U. NMThe RB25DE cylinder head within the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) might be used. The RB25DET (within the R33 Skyline or C34 Laurel or Stagea) head is likewise used, even so an external oil feed