i have a mate with a fridge setup with one twist tap with SS disconects all ready to take commercial kegs - complete with keg coupler, reg and ss drip tray on the fridge - gas bottle might have to check on.
For sale as a complete unit for all up, approx $400 - $500.
yeah the first time i did it i had to drill a hole to get the top c shape thing out and then took some time working out how to unscrew it.now if done three and have got the same valves as corny kegs in the top would love to get the actually parts the pubs use for them.the corny parts are fairly cheap.