I don't think that there are a ton of twin warbird kits out there, at least none that are not very expensive. I would suggest you go to the twins thread and ask the question, there is a buy there named Twinman who really knows his stuff, he can also be found on www.rcwarbirds.com.

About the only twin warbird kit I can think of is the Topflite DC3, there may be a couple of others, but I am not sure. The DC 3 is not a kit to learn to fly twins on.

good luck