What timing belt for y8 head and Sohc ZC

I've decided to put the D16y8 head on my Sohc ZC which is the same thing as the D16a6. I've tried to look for how-to's about the head swap but all I can find is info on the D16z6 heads. Does anyone know what timing belt to use on the D16Y8 head to A6 block? Both Vtec heads look similar so I'm guessing to use the Z6 belt, but I just want to make sure. I tried to use the A6 belt just out of curiosity and it is definitely a loose fit even with the tension tightened, so that one for sure does not work with the Vtec head swap.

I'm pretty sure z6/y8 is the same. Not too sure though. PM marked001 and he'll tell you.