Finally got my 55.2 on the road. After 30 miles of cruising I pulled it in the garage and noticed a significant leak coming from the steering box. I've read the manual and looked a the photos of what my truck should have, but the box looks different.

Manual: http://chevy.oldcarmanualproject.com/gmc/5559mm/5559mm525.html

I'm super apprehensive about attempting to pull the steering column out. I can only surmise the leak is a gasket of some sort. Anyone have any idea what the problem is and the best way to fix it?

Here are photos of the part and leak:https://www.flickr.com/photos/71945287@N03/sets/72157647364623512

1955 GMC 100 Series 2