Wow that is a wonderful, great honeysuckle. We seldom get them that thick this far north.
I once tried to take a one inch thick vine and get it to grow out and get thicker. After 5+ years I abandoned the project, they do not thicken very quick at all. A trunk like the one you have must have come from a vine that was over 50 feet long. A wonderful find.
Honeysuckle are great, but for best results you should look for a collectable vine with all the caliper you need, if it is not as thick as your design calls for, no amount of growing in a pot will thicken them up. (well maybe there are ways to do it, but it is really difficult to get them to add caliper).
Since many areas list it as an invasive species, it usually is not hard to get permission to dig one up should you find a good one.