It is possible, but not probable. The problem is the wide variety of thread sizes used for the keg posts. You may or may not be able to find a ball lock post that will fit the threads on your keg. Check out this link for a listing of brands and the thread sizes. http://www.ipass.net/mpdixon/KegThreadSizes.htm
Lids are generally interchangeable. Dip tubes will vary by manufacturer.
