The two rear deck speakers are retained by more T20 Torx hardware (four per speaker). We used a small ratcheting bit driver and a T20 bit to remove the screws. Space is at a premium between the speakers and rear glass so choose your tools wisely. Disconnect the speaker wiring and install the Kicker replacements. Reinstall the package tray trim and driver-side quarter trim and door sill cover. The passenger side is left off for now to route our trunk-mounted subwoofer wiring next.