drive train

What is your question?

I have a ram diesel 2500 237000 miles. I had a, what i would say a clunking sound at 5 mph forward or reverse. I changed the universals,carrier bearing. It still did it. I took the drive shaft out and took it to the local shop to have them rebalance the shaft. They did it with putting new splines on it. I just got it from the shop with inspection. I put 50 miles onit and it is starting to do it again. Is it the rear?