its been swaped to a jdm zc, there are three zc's...
1-sohc non-vtec=same is d16a6
2-sohc vtec=same is d16z6
3-dohc non-vtec

someone has swapped the engine and kept the old intake manifold so they wouldn't have to convert to multi point. Cnvert that thing to multi-point and it will make a lot more power....