I am upgrading my system with these three items :
1) JBL GT6-6 6-1/2" 2-Way Car Speakers - Sonic Electronix (JBL Gt6-6 for my door speakers)
2) JBL GTO938 Grand Touring GTO 6" x 9" Car Speakers (JBL GTO938 for my rear deck)
3)JBL CS1214 12" Single 4 Ohm CS Series Car Subwoofer (JBL CS1214...