I just recently upgraded the door speakers on my Shaker 500 with Focal IC 570's. They sound great!
I had previously upgraded them with Boston Acoustic S85's, and that was a nice improvement, but the Focal IC 570's are much better. I moved the S85's to the rear deck. Well, actually I had the shop do it all for me this time aournd because I didn't want to deal with pulling apart everything to do the rear deck speakers.
Vista Blue 2009 V6 Premium w/Pony Package, X-Charger Xtreme #276
Auto, Custom duals, GT500 8.8 w/3.73 gears, Shaftmasters driveshaft, Konis, GT brakes, Roush rear springs, and various interior/exterior upgrades
48 states road tripping in my Pony...