The keg was gone before I could buy it from CL. I think it would work though. If you drilled the tap hole above the base of the keg, as you would converting a sanke to keggle, it would allow enough space for the yeast to settle. And if the original opening would accept the bung you'd be all set. Northern brewer sells the parts ( I'm sure others do also, buts that's where I saw them) they actually have a photo of a cask that is standing upright ( instead of on it's side as I'm used to seeing) and it doesn't look much different than a 1/4 barrel.