tube

Quick question,might be stupid but figured id give it a shot. I ran over a nail ..flat tire etc. I have spoked rims so I just changed out the tube should I have plugged the tire as well? I took the nail out. What will happen if I don't plug the tire if I needed to? As always you guys are...

If I recall correctly the XS400 has 33mm tubes, yes? I've done some searches on the forum and all I'm finding is swapping triple trees or converting to inverted forks. I don't want inverted forks, just beefier forks with a larger diameter. I'm thinking boring my factory triple tree out...