The front door speaker is a 6.5" round mid.
It's the same as a rear speaker in an access cab or double cab.
The speaker mounting baffles sold by Marv and Tacotunes made for the rear speakers will work for the front doors of a regular cab.
I recommend you get ahold of Marv and he can cut the baffle to the exact mounting diameter of the speaker you choose, and the right thickness of the baffle to work with your mid.
http://community.webtv.net/MarvsPlace/MarvsPlace
-Custom Built Sub Enclosures, Speaker Baffles/Spacers, Amp Racks etc.....1-831-383-0308..
http://s29.photobucket.com/albums/c2...ota%20pickups/
I'd rec. the Pioneer TS-C720PRS components from Pioneer. You can get them for about 250 shipped online at Millionbuy.com or hit up your local dealer and see if they can get close to that price.