I just finished installing a new sound system in my Tundra. From Crutchfield I purchased a Pioneer DEH-P6500 and Polk Audio 6 1/2" component speakers (db6500) and 6 3/4" 2-ways (db675) for the back. I also purchased a box of Dynomat Extreme sound proofing which came with four 12" x 36" pieces.
Removing the old head unit was no problem, although the two bolts that held the stock amp were a pain. I soldered the new wiring harnes together and installing the Pioneer was a snap. It had better sound right then with the stock speakers still in.
Using the door panel removal info off of TS, excelent by the way, I first took off the drivers side front door panel. No problem. I removed the old speaker and mount, and the plastic covering the door and wires. First, since I was using 6.5" speakers in front replacing 6.75" I had the adapter Crutchfield sent. WORTHLESS!!!!!!!!! I ended going to Car Toys and one of the guys sold me two of their metal adapters for 10 dollars, which was cool of him since he said they were not for sale to the public. They worked like a charm. Then I went to use the Dynomat, and ended up using the whole box on just the one door. I did the inside of the door and the side under the panel though. Had to buy two more boxes to do the other front door and the back doors. The cross-overs mounted with no problem next to the speakers. I was suprised the stock tweeters only had a little resister or whatever and not a real cross-over.
Then I went to do the back doors. The problem came when the Polk Audio db 675 holes did not line up with the mount in back, and they didn't send an adapter because one should not be needed, they were both 6.75" speakers. I was a little pissed and I called them and told them so. They exchanged them for Infinity Kappa 652.5i speakers even exchange. Which was also cool because I got the rear speakers for 50% off when buying the front Polks. The Infinity Kappas had a cross-over that came with them also, and the tweeters where able to spin like 345 degrees. Used one box of Dynomat between the two back doors.
So, it's all back together now and sounds fantastic. The doors are solid like a rock and it's like a tomb in the cab. The sound difference is amazing. The Organic display on the Pioneer is pretty cool also. I am very pleased. I think I will probably Dynomat the entire floor and wall behind the rear seats eventually.
The whole job wasn't bad at all. Would have gone a lot quicker if the adapter and rear speakers Crutchfield sent fit the first time. I know the Kappas are better speakers that the Polks I had originally bought. They sound great with lots of good solid bass. The Polks in front sound great also. I am no expert in picking speakers, but the two pair together sound really good. I would like to install a Pioneer XM-radio tuner which will work through the DEH-P6500 since it's XM ready. I will post some pics of the before and after Dynomat job on the front doors. I didn't bother taking pics of the back.