lee

my 2001 sr5 has 6 3/4 up front and 4" rears.

4Hummer

Are we going to Cover Upgrades ?

Amp Options -stuff like what bridgeable means, 2 Ohm and 4Ohm and what they do and mean,

Cross Overs ? and all the other goodies,

Ill delete this post when we know. Just trying to figure out where this thread is going.

TRunner

We will list all factory and factory upgrade components, but I don't want to list what people have installed themselves or by others. Only if it comes from the dealer this way.

We will definitely get into answering any questions. I will add these and see what kind of response we get from folks. Good links will be provided as well. Thanks!

nieuwendyk-25

3rd Generation factory front woofers are 6.75" when measured all the way across the mounts, and the brackets must be slightly modified to fit a 6.5 correctly (without stress on the mounting ring and the screws in straight). I know this is true from actual measurements from a '96, a '98, a 2000 and a 2002. I have seen them listed from several reliable sources as 7" and I have stated that several times in other post. Tonight I actually measured the removed speakers I have in my garage and it was dead on 6.75".

As far as the rear goes it is a little confusing. The factory rears should probably be considered 4" as that is the speaker size, but the large mounting ring and cardboard baffel make the speaker "assembly" more like a 5.25 inch. I have a 4" set of Alpines in my Jeep and the speaker cone is the same size as the 4runner cone but the mounts vary by about an inch. You cannot just swap them for a 5.25" using a factory bracket for sure in the '98 and 2000 that I have worked on, but they can be modified to take a 5.25" or a 6.5". If anyone wants more info on this I have pictures and some recommendations, but I know we are trying to keep this neat.