Will the yonaka catback fit onto the skunk2 header? D series.

 

the yonaka is designed to fit the OE exhaust manifold and cat combination. If the S2 header is CARB approved, it is probably matches the OE exhaust manifold dimensions and would likely bolt up to your stock cat. if it isn't, it's probably not going to bolt up. You could always measure the S2 header and your OE exhaust manifold.