I recall reading on here that some 1.5 tons had one-piece wheels. Going to check out a 1949 4400 today in hopes of finding serviceable wheels for my 1950 6400. Pics look like one-piece or locking ring - either of which is acceptable to me. Does any one know tire size for the 4400? I’m assuming its 7.5 -20 but I’m hoping it’s 8.25 - 20 or that the rim would accept that size.