If you are going to run tubes, the tires MUST be tube type construction. Running tubes in tubless construction tires canlead to prematures tire failure, especially if the truck is loaded and/or running highway speeds. This is due to the chaffing of the tube with the inner layer of rubber in the tires, which causes exsessive heat buildup and rubber degradation. I know there's several guys on here that have done it with no issues, but I, as a tire industry professional, cannot advise doing it.
Another note on tire selction, make sure you get the proper load rating. A P rated tire will not live long on a 3/4 ton truck. You will want at least a C range tire.


Bill Burmeister