Car is a 2008 Pontiac g5. I purchased 2 sets of the 6.5 zch components and installed both sets into my front doors. Powered them with a crescendo 1100.4. Added some pioneer 3 way 6x9 in rear deck. Then I added 2 of the new z series subwoofers in a small sealed enclosure I had laying around. Powered those up with my crescendo bc3500d.