It really is like how a redtop 4age doesnt even have a crimson deal with, a bluetop 4age doesnt Possess a blue cover.So all you turbo Gen 3 Turbo fellas trying to find a side feed manifold shoot for just a Gen 4 Caldina 3SGTE manifold and be prepared to do some mods. You will also really need to reset your ECU after the new all the things is set up