what speakers should i get

need some advise on speakers. im looking at putting component speakers in the front and adding a sub, i need to know what i should put in my back doors. any suggestions would be good. thanks

 

I would go with kicker or JL or infinity 6X9s for the rear doors, same for front.
Im running image dynamics component set up front and love them

 

for a sub get infinity kappa's an the 10" JL soft hitting sub