I just bought my f150 and getting ready to change out my front and rear speakers and just need to know what size for front and back. Please help???

 

all four of them are 6 X 8's unless you got the audiphile system....in which case i got no idea what the sizes are but if they are different they are just installed with adapter plates and 6 X 8's will fit in their places reguardless.....5X7 will also fit in there too but that would be retarded i think lol...just get some 6X8's

 

what speakers are you putting in?