I'll use my first 72 as an example. It originally came with manual steering. I'm getten too old and lazy for that manual crap. So I ditched and sold the manual gear box in favor of installing a power steering gear box. Not only that, if your out in the trail having fun and the sector shaft breaks, then you're stuck. Unless ya got a spare. Don't laugh, I recently heard it happen, and the guy didn't have a spare. Just food for thought.