Hydo assist beginner\'s guide... There are tons of threads on this, I know. So many that if you do a search you'll be overwhelmed, so I had to ask. What modifications do you have to do to the steering box or do you have to buy one that has the extra holes for the lines? Can you drill your own? And after that is taken care of, all you need is the thing that bolts to the tie rod (ram), right?