When I got the injector bungs welded into my kjet manifold the angle was set so the injectors spray more or less onto the back of the valve. With the 16v head having oval ports and two valves the tricky bit will be at the bottom flange and injector bung angle. I'll probably get 38-39mm inlet valves put in and the ports enlarged which will make the runners a greater diameter. Just debating whether to have the runners oval or round or have them change half way down.