Great set! This one boasts the highly desirable shutter dial too! As a general rule-do not power this set up! I just worked on a similar Zenith and even when I had it hooked up to all of my safety equipment on my bench it almost roasted. Had I just plugged it in it probably would have been a house fire. Now, that being said, they are very easy to work on. Here is the link to your radio:
http://www.nostalgiaair.org/Resources/500/M0025500.htm
Right now the set in our living room is a very similar 8s463 and we love the sound it puts out. I only had to replace the electrolytics (c18-21 in your set) to get it running and it only took about another half dozen little parts to get it to run perfectly. Enjoy this set and let us know if you need any help!