As title suggest, I am looking for size for speakers located in the doors as well as in rear. I am trying to upgrade,thus was interested in these spec so i can buy. Thanks.

 

If you buy from Crutchfield you'll get the necessary wiring and mounting adapters as well as instructions for removal. You will also get a narrowed down selection of speakers that fit.

i'd look at 6.5" component set for the front and matching 6x9 for the rear.