I think you can but if I am not mistaken that required the bigger amp, like 322watts. One of my older 07 chargers had this 8" sub in the deck and it was not that great. You can always try to mount a separate sub and then use a separate amp and tap into the rear deck wire leads and use a line out converter. The only downside is sub in rear decks lose a lot of bass from my experience.
Looks like if I was to go that far I should do it all up right with better amp and speakers and not try to work the 8" deck solution. Thanks for the info!
2012 SXT V6/8SPD Sport Package (Rallye)
Performance: Rear Stabilizer/Mopar CAI/Quantum Blue/ACES IV/Tackified Red
Exterior: Mopar Caliper Covers/Mopar Chin Spoiler/Rear Spoiler
Interior: OEM Rearview Camera
JBL GTO3EZ/504 Amps /PAC Audio C2A-CHY5 HU Adapter/MiniDSP 2x4 Sound Processors
Infinity Reference 3032 Dash 3.5"
Infinity Reference 9632 Door/Rear Deck 6x9"
Infinity Reference 1062W 10" sealed sub