I measured the exterior grills of my door speakers the fronts are 5 1/4" and the rears are 4 1/2" are these the sizes of the speakers I will have to replace them w/or is the opening a 6 1/2" opening so I can install some 6 1/2's. I'm gonna be running my Hifonics Jupiter 4 ch amp on my front doors the mid and the tweet, then my rear door mid and I will be mounting another set of tweets firing off the rear glass on the c-pillar and when the back glass is rolled down they will fire out the back of the truck
. I'm gonna run the Jupiter at either 110x4@ 2-ohm or bridged 250x2 @ 4-ohm. And My Hifonics Colossus on 8 Kicker 10's I will be running it at either 1600x2 @ 1-ohm or 3200x1 @ 2-ohm. Trying to make my 4Runner be a real Rolling Thunder.......evil laugh! Any help will be greatly appreciated!

 

Fronts are 6.5", rear door speakers are 5.25"

 

stockers in the rear doors are 4.5s.

however the 5.25 will fit with the adapters.

Some speakers are just too thick or "deep" for the rear doors, so watch your total depth

 

crutchfield.com can give you some good info on what fits and what requires adapters.

 

thanks for the replies I'm noticing the mounting depth of speakers I'm picking out

 

Here's some info and photos of my upgraded door speakers I did almost 2yrs ago:

https://www.yotatech.com/forums/f96/...nstall-116312/

EDIT: I've seen guys go with 6.5" door speakers front and rear...just requires a bit more modification on the rears.

 

wow thanks for the very good information!