You can fit the corny lids on the top of the standard sanke kegs, I have retrofit a couple for other folks. Make a paper template of the opening and position it on the top in an area away from the embossed warnings in the top and look for at least 1/2" around hole for sealing surface. A 3" hole saw, a bit of grinding, and cutting about 1/4" off the legs on the corny lid retainer and you should be good to go. This lets you retain the spear for use as a standard sanke keg setup if you want.