Originally Posted by Airhead Wrangler
Working 180 degrees out doesn't matter as long as you're on the right tooth. If you time it 180 degrees around from the timing mark, it doesn't matter.
Not so long as you match everything up. Don't see matching yellow paint. Also, using the existing marks is smart. Why not? Why did someone work 180 out?
Make sure neither pully has an offset key in it.