pjn and asofel drink a keg of beer in 48 hours.

[BruinEric]

IMHO you shouldn't even risk trying this. Your chances of sickness or worse are real.

Regular Miller Lite is approx 4.17% ABV
Regular Coors Light is approx 4.2% ABV

Some states and venues (ballparks, etc.) sell 3.2% ABV recipes of beers. As far as I know this is pretty sloppy and you really have no way of knowing if you're REALLY getting a 3.2% beer or not in your context...unless you're in a 3.2% state (and even then 'mistakes' are made I think.)

Don't do it.