If you get a "Carbonator Cap", you can use your CO2 bottle to force carb it the day you keg.How much do you have left over? If it's two quarts, you could bottle in a 2 L club soda bottle. Just fill to 1 1/2" from the top. Add 1 Tbls of cane sugar, plus just a bit more, then squeeze the bottle till the beer comes to the top and screw the cap on (this will eliminate the air and give the beer room to handle the pressure). Shake it up to dissolve the sugar and let it sit till it is hard as a rock.
Chill that puppy for a few days and you'll be good to go.
If the kit is for 5 gallons, one kit per keg should do it.Nice.. thanks for the replies guys.. I havnt brewed it yet i just wanted to mre prepared for when i do.. But im still curious as to how many of those coopers kits i should purchase to fill 2 corny kegs?
Thanks again guys