i have some zr headers they came off my dohc zc
and from what i know the ZC is a d series , correct me if im wrong but will these headers fit other d series engines that are sohc??

 

they will bolt on but the ports are offset on the zc manifold so flow can be affected.

 

Yep, although chances are they were actually made for a regular D-series and someone used them on a ZC. If you want to check put a D-series exhaust manifold gasket up the flange and see if the ports are shifted over a 1/4 inch or so.