What size are the deafcon II's? From all the information that i have I think you want a minimum of 150w each.
I assume you are running 2 pairs. If so you could go with 2 of these JL G1300 full range AB
better yet would be a 2 channel that can run at 300-400 watts @ 2 ohms and that should be able to power all four.
something like this i think would do the job nicely http://www.onlinecarstereo.com/CarAu...s_ZXi1008.aspx
Again i'm no expert and i'm sure others will chime in with better recomendations.