You can find angular alignment reference points for that timing belt program in the form of a little protrusion over the oil pump and also the matching notch cut out from the timing belt push pulley’s rear flange. For no explicable purpose the timing marks / notch within the Blacktop https://4ageblacktopengineforsale81122.link4blogs.com/53771941/detailed-notes-on-4age-20v-turbo-engine-for-sale