Hey I have a 98 F150 extended cab and i was wondering if the front and rear speakers are 5x7 or 6x8 and if 6x8s will fit front and back and if there is anything else i need to fit 6x8s besides the speakers and aftermarket speaker kit

 

5x7/6x8. Both sizes will drop right in with no modifications or adapter plates.

All you will need is a harness to plug into the factory one, or else splice into the stock wires.

 

Ford calls them 5x7's but they are the same. I have Kicker 5x7 components in my 1999 and the went right in the factory spot.

 

My Polk DB 5x7's went in w/o a problem. 6x8's will fit w/o a problem too.