I asked for the quotation with a Sunday afternoon and received it inside the hour. That’s wonderful customer care! T.U. NMThe RB25DE cylinder head in the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) can be used. The RB25DET (in the R33 Skyline or C34 Laurel or Stagea) head can also be used, nonetheless an external oil feed must be fabricat