But if you wish to incorporate a lot more and get to 400 HP, you should substitute your OEM turbochargers Together with the GTR RB26DETT N1 turbochargers, acquire an enormous intercooler and an MLS gasket head.The RB25DE cylinder head with the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) is usually used. The RB25DET (in the R33 Skyline or C3