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6.5
5x7 6x8
Both the front door speakers and the speakers in the rear are standard Ford 6"x8".
6 X 8
if i am not mistaken the front door speakers are 6 in a half inch and the back speakers are 6x8 inch speakers.
from80's to 98 its a 6x8 in front and back
My 1997 e350 has 6x8
5x7
It depends on what size cab u have. I have an 89 regular cab and I only have one pair of speakers, they're 6.5" in the door speakers. I'm pretty sure that extended cabs have 6.5" up front and 5x7 in the rear
6x8 ALL DOORS
idiot- "The most common front door speaker size of a 1999 ford f150 is typically about 3 feet wide and 1 inch deep." actual answer 6x8's
the sizes are five and a quarter in the front and 5 by 7 in the back