The Icon

I think the rear doors were 4x6, front 5x7.
I'd take the 4x6 and chuck them far far away,get a nice sounding 5 1/4 or 6" and make a simple plate to mount them, while your in there sound deaden the doors up its like 10 bucks worth of sound deadening.

A single 6" driver in the doors and a tweeter in the door panal or a piller should sound good ( did for me )

could always go kick panals even with my winter boots on I had lots of room but I do have a auto If you go kicks I'd reccommend metal dome tweeters like alpine type R's or something of that nature, if you mount them up high go soft domes( silk dome whatever )

good luck.