Back in March I bought an 89 F150 Lariat extended cab. The previous owner couldn't find the detachable face for the old radio that was in it. My wife will be getting me a new head unit and speakers for it for Christmas. What size speakers will fit the drivers and passengers side doors? Is there a place to mount speakers in the rear? The PO had some surface mounted 6x9 back there but it looks like ***** and those are getting yanked.

 

Have you tried taking the old front speakers out and just measuring them?

 

I might be a little late here but your door speakers are. 6.5"