Hello, I am doing a headgasket replacement and rebuild of my heads on the V6 3.0 liter saab 9-5. All was going good untill I went to install the cam sprockets. I realized that the sprocket could let you install it on the cam notch in 2 ways 180 degrees away from each other. I failed to notice that on the sprocket when I removed them. So the question here is does anyone know where the notch pn the cams should be pointing to for TDC for both heads for both intake and exhaust. Thanks.