Stereo & Electronics - 94z28 audio upgrade

Hi I am asking if anyone knows what the stock speaker sizes in the 93-97 f bodys are? I want to replace old ones with new ones but need the sizes any help would be great thanks.:usa:

front speaker size is still a mystery to me, but i believe that the rears are 6 1/2-3/4 ". Hope this helps. If I was inaccurate i apologize. I too am just now considering upgrade options.