I changed to Shelby GT speakers, which are actually Kicker speakers, the 6X8 in front doors as well as the 8 " subs in front doors, I went with JL Audio in the rear as well as a 10" Subwoofer in the Trunk. I added two Amps in the Trunk for the Speakers and the box Sub. To do this stuff with the Amps, I needed the shop to get a particular wiring harness to hook all this stuff up to stock radio. I have not changed the Shaker 500 yet because it holds 6 CD, and no other radio does that, I have to buy a new player with a CD changer hooked up to it. To me that Shaker is nice, it does a lot of things, even though a after market Stereo probably sounds 100% better. I would send you some pictures but I have not taken any new ones since the whole thing was hooked up, my camera broke.
07 GT SCT: CUSTOM TUNE by "MUSTANG SPECIALTIES". STEEDA: CARBON FIBER HIGHFLOW CAI. STEEDA: 1 PIECE ALUMINUM DRIVESHAFT. FRPP: 4.10 GEARS. MAGNAFLOW: AGGRESSIVE 3" 409 STAINLESS STEEL DUAL EXHAUST. BBK: LT 304 STAINLESS STEEL HEADERS, BBK: o/r X-PIPE. MSD: BLASTER PERFORMANCE COIL PACKS. POWERSTOP: CROSS DRILLED SLOTTED ROTORS. WHEELS: STAGGERED WHL 22X8.5F-22X10R.