Don't need mount. At least I didn't and mine is a 2012 - built Feb 2011. I went with the pioneers for no particular reason over the others but they got good reviews and were a good price off Amazon. I'm happy with them! I will tell you though I bought a harness off Amazon and it was junk. Both sides ended up coming loose and the connection was lost. I had to replace it last weekend w/ one from Best Buy. Only $8.00 but kind of a pain in the butt and also had me stressed on what was wrong for a while.
2012 black on black GT Premium Auto 6R80 - 400A
20 x 8.5" AR Torq Thrust M - BMR springs & Koni str.t shocks - GT500 mounts - J&M LCAs - CHE reloc brackets - J&M panhard - General GMAX AS3 - GT500 axel backs (no resonators) - GT500 spoiler - MMD tail light trim - Roush side splitters - AM upper/lower billet grill - Bama 93v2R tune - Airade CAI