Look for the "P-08" casting on the exhaust side of the head between ports 2 and 3.

But also just by looking at it, that is not a vtec head. All vtec heads have the spark plugs on the exhaust side of the head. The y7 is the only non vtec one with them like the vtec versions.

Also you shouldnt be able to fit a z6 valve cover on a d15 head, except maybe the z1.