how big are the speakers in the passenger and driver side door and the two speakers in the back because i am wantin to replace them

 

 

the ones in the back are 6x9s the ones up front are oversized 6.5s, or 6.75.

 

yeah, the speakers up front are kinda weird... the mounting holes at least.
I bought a set of Kicker RS6c components and they don't reach the stock screw locations. I had to take the speakers along with the entire surround for the speakers to a machine shop in order for them to solder some mounting tabs on the mids in order to reach the stock locations.

It was worth it though, greatly improved SQ.