So, my old 03 4Runner Sport had the JBL 10 speaker system which I replaced with all aftermarket speakers, including cutting a 3.5" full range speaker into the center channel. The biggest downfall of the 08 SR5 is that it had the stock 6 speaker stereo and no center channel. I missed having that crisp clarity in the center of my old truck so I did the next best thing. I bought another set of the Infinity 3.5" speakers and replaced my 1" MB Quart tweeters with a set of 3.5" coaxials.
Here's the original setup
I kept the MB Quart 6x9's and just replaced the tweeters to add more depth and midrange to the stereo. The speakers almost fit right out of the box, however I did have to trim down the tweeter brackets a bit with a dremel, and drill new screw holes in order to mount these bad boys. Here is my first test fit before any trimming. This is actually upside-down in this pic, but you can see how high it's sitting because the basket was hitting on the sides of the bracket
After some cutting, grinding, and a little bit of hammering on the door panel, this was the final result all screwed down, I also kept the stock screw holes for whenever I want to trade it in and put stock speakers back in.
The driver's side was the first attempt, so most of the time (a couple hours) was spent on that side to perfect everything. The passenger side went quick, probably about 20 minutes total. Here's a test fit of the the passenger side before I started trimming the bracket.
And here's the passenger side all complete
I trimmed back the tweeter ring around the inside of the door panels, just to make sure that they didn't touch or contact the speaker, although I'm not sure if they would, it was just to be on the safe side. I debated on using bass blockers, but decided to go without since I spent the money and time to upgrade to these full range speakers. If I ever put my highs amp in, I may put a cross over in there, but right now everything is powered off of my JVC navi and sounds amazing. :whoo: