yes with no problem
if it is a extended cab all 4 four speakers are 6X8
In the doors front and rear.
6X8 most speakers are 6X9, pioneer makes a factory replacement for Ford/Mazda that is 6X8
Depending on what year model 1990-1999 is either 6x8 (5x7 is the same thing) or 6.5". The 1996 Ford Ranger XLT model the front and rear speakers are 6x8(5x7).
Crutchfield shows the DOOR speakers to be 5 1/4" and the REAR speakers to be 6" X 8."
Rear speakers: simply unscrew the 4 screws that hold on the cover then you have access to the speakers. Front speakers: you will have to take the interior door panel off this should give you access to the front doors.
Front and Rear 6.5 Inch
Not sure how your speakers are installed, but Haynes Manual says: Remove speaker screws; pull out speaker; remove speaker wires; installation is reverse.
according to crutchfield, there are 6x8's in the back. most 5x7's will fit without a kit, but the mounting depth is really shallow in the rear.
Probably three unique features of the HTC One M8 are the mostly metal construction, dual BoomSound speakers in the front of the phone, and the UltraPixel (4 megapixel) dual rear cameras.
Crutchfield.com has vehicle specific information available regarding factory speaker sizes etc. Check them out!
some do have rear speakers but you will have to check it