The rb30de you cansee in the pic is actually mine, but it has the rb26 head on, you can just bolt the rb26 head straight on if you use the r33 / r32 head. I spoke to rips in new zealand and he said not to use the 12mm studs on my engine but to stick with the 11mm.
The rb26 and the rb30 share the same head gasket as well so its a cheap way to buy your head gasket.
Its only the rb25 with the variable cam timing that needs modifying.