ok, I was as frustrated as anyone by the odd speaker sizes, shallow mounting depth and poor sound quality and set out to upgrade them right after I had my new head unit installed (Alpine INA-W900BT DVD/nav). I decided to focus on the front and rear doors as it just doesn't seem to be worth messing with the dash and rear headliner speakers due to their impossible-to-match sizing. After going through 2 sets of door speakers here's what worked with minimal modification and very good sound quality:
front doors - after researching the various threads I was convinced shallow mount 6.5" mounted under the door panel with factory grills was the way to go. There's just no aftermarket grille with low enough profile to fit when you close door. I ended up going with Rockford Fosgate P1S652 shallow mount with a 1.89" depth and hole diameter that matched the factory of 5.59". I ended up dispensing with the foam you see in pics and just used the spacers made out of vacuum tubing to prevent magnet from touching the window lift and grey foam tape for vibration issues. I had to enlarge the door liner opening with a tin snips to accommodate the larger speaker. reinstalled door panel, drilled 3 holes in factory grille, then mounted to speaker/door using 1.5" black phillips head screws. you have to be very careful trimming the leather so as not to split it beyond grille diameter but I think it came out pretty good.
rear doors - first iteration was modifying the existing plastic ring by cutting out the back and mounting 4" Rockford Fosgates so as to use the factory grilles but they just didn't put out good sound. I knew some had fit 6.5's by making mods such as cutting a larger hole for magnet but I really didn't want to do that. The solution was as close as Wal-Mart, minimal mods and only $40! Pioneer TS-1643R 2-way 6.5" with only a 1 5/8 mount depth and 3" magnet which fit existing hole with room to spare! Best part is they mount right over the door panel with the included grille with only a few mm space. I taped 5/32" ID vacuum tubing on back of the speaker as a spacer/vibration absorber; it fit perfectly in the curved recess of the metal ring and prevented the terminals from rubbing on the metal cutout. I soldered the wires to terminal to ensure they'd never come loose. it was a little tricky drilling the 4 new holes since the triangular recess curves in a few mm but turned out fine using #8 2" black phillips head screws. all in all much easier than the fronts and great sound for the $$.
next step - definitely need to upgrade the crappy woofer in back with a basic mono amp and either an 8 or 10" sub. Kicker and Pioneer make one with less than 3.5" mount depth to maintain factory look.
front doors - after researching the various threads I was convinced shallow mount 6.5" mounted under the door panel with factory grills was the way to go. There's just no aftermarket grille with low enough profile to fit when you close door. I ended up going with Rockford Fosgate P1S652 shallow mount with a 1.89" depth and hole diameter that matched the factory of 5.59". I ended up dispensing with the foam you see in pics and just used the spacers made out of vacuum tubing to prevent magnet from touching the window lift and grey foam tape for vibration issues. I had to enlarge the door liner opening with a tin snips to accommodate the larger speaker. reinstalled door panel, drilled 3 holes in factory grille, then mounted to speaker/door using 1.5" black phillips head screws. you have to be very careful trimming the leather so as not to split it beyond grille diameter but I think it came out pretty good.
rear doors - first iteration was modifying the existing plastic ring by cutting out the back and mounting 4" Rockford Fosgates so as to use the factory grilles but they just didn't put out good sound. I knew some had fit 6.5's by making mods such as cutting a larger hole for magnet but I really didn't want to do that. The solution was as close as Wal-Mart, minimal mods and only $40! Pioneer TS-1643R 2-way 6.5" with only a 1 5/8 mount depth and 3" magnet which fit existing hole with room to spare! Best part is they mount right over the door panel with the included grille with only a few mm space. I taped 5/32" ID vacuum tubing on back of the speaker as a spacer/vibration absorber; it fit perfectly in the curved recess of the metal ring and prevented the terminals from rubbing on the metal cutout. I soldered the wires to terminal to ensure they'd never come loose. it was a little tricky drilling the 4 new holes since the triangular recess curves in a few mm but turned out fine using #8 2" black phillips head screws. all in all much easier than the fronts and great sound for the $$.
next step - definitely need to upgrade the crappy woofer in back with a basic mono amp and either an 8 or 10" sub. Kicker and Pioneer make one with less than 3.5" mount depth to maintain factory look.