Does anyone know if an exhaust manifold from a D15B will fit properly onto a D16Y4 or Y8 head? I'm looking at getting one of those 5zigen exhaust manifolds but they only seem to have it for the D15B. Reason for the query about the Y8 head is because I have a D16Y4 at the moment but plan on swapping the head later down the track (not for quite a while unless my engine carks it) and hope to be able to reuse the exhaust manifold.

Mods, if you think this is better placed in the the technical section than please move it. Thanks.