I got them off of a fellow nc4x4 member Jodyfj40. He grooved them and they came off a jeep with a big motor. He was a very nice guy and gave me a killer deal.
You can find them if you look they are not too hard to find. Try surplus military guys and even the guys that get the H1 wheels, If they don't have them they can probibly get them, I know these are from the Canadian Military and are produced in Canada.
In a 38s you can get XMLs, XLs, and XZLs. The XMLs are the widest. You need 16" rims 8" wide rims for the XLs and XZLs and 10" wide for XMLs. This is to get the best contact patch because the tires are rather flat across the tread.
BTW what does (DW = No good!) mean?