Door Speakers, 96 Ford F-150

Hi All, I'm new to this great site and happy to have discovered it! I have a 96 Ford F-150, 4.9L, 152K miles, that is my daily driver for my 98 mile round trip commute. I had an aftermarket am/fm/cd installed and have been running through some speakers a friend gave me; they work great. However, my door speakers are toast and I would like to replace them. My dilema is I would like to know the speaker size before I take the door panels off. Info so far goes back and forth between 6x8s, 5 1/4, to 6 1/2. Any and all help would be greatly appreciated!

6 1/2s in doors, and 5x7/6x8s in the back, but the back ones are sketchy the way they load like in reverse. In my 92 XLT how it was. I assume it is the same. call crutchfield, they will tell you EXACTLY what WILL fit. there is a depth issue in the doors if you have power windows. I believe (like 5 years ago) I got JBL 5x7s for the back, and the shallow mount infinity reference 6.5s for doors. ps. 98 is easily rounded to 100 99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

Site here says 5 1/4s in doors and 6x8s in back. but 5x7 is the same as a 6x8 i believe? dont know why. I dunno, but i KNOOOWWWW i fit 6.5s easily in the doors. I would definatly check this. I dont know why there is so much confusion, but you are right, there definatly is. https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1996&make=Ford&model=F%20Series&ID=17811&type=Stereo99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

i just did one today and they were 6.5s front 5x7 back

Wow, thanks to all for the research and great info! Now I can go shopping and get the correct sizes. After looking at the stock speaker grill, clearance between the back of the grill and the front of the speaker could be an issue. Unless I get out the Dremel and sorta cut out enough of an opening to accomodate them...if I can't find shallow mounts. We are kinda limited here in AK.