If it's the box leaking, spray it with brake cleaner to get it clean, so you can see where. It may be something as simple as tightening the bolts on top of the box, where the hoses connect, or a leaking hose fitting. The input shaft seal could also be leaking. That one is fairly easy to change, but you would have to take the steering column out to do it. The output shaft seal could leak too, and that one is a pain in the butt to fix! I'd swap the box out for a rebuilt Steer and Gear PS box if the lower one is leaking. You could also swap in a Borgeson PS box if you want to spend the $$$ on it. I saw a 65 Barracuda with a Borgeson box a while back, and it was a slick set up!
