Yes. The also flow air different. Thats why b16/type r intake manifolds are the same. They're the same casting but the Type R comes ported and polished from the factory along with a better valvetrain. My advice is this. Fine some used b16/gsr/typer pistons.(wont be much) Get some ITR valves/valve springs etc and put them in a b16 head add nitrous and you have 12 second street car.