I asked for the quote on a Sunday afternoon and obtained it inside the hour. That’s good customer care! T.U. NMThe RB25DE cylinder head from the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) is usually used. The RB25DET (in the R33 Skyline or C34 Laurel or Stagea) head is usually used, nevertheless an external oil feed have to be fabricated