This kit part no 2309-RN008 was designed for rb26 but head gasket can be use for RB30 also. Contains Metal intake gasket and metal MLS exhuast gaskets. Drag MLS head gasket 1.2mm I have run these gaskets in 3 previous engine builds and have zero problems they are one of if not the best sealing gaskets for high pressure engines. It is all brand new kit and never opened. I purchased around 2 weeks ago but have since found I need to change thickness slightly Cost me over $600 but sell for $500 ono If someone just wants the head gasket $350 [email removed]