First of all, thank you all so much for taking the time to post. I went out and found out as much information as I could about the Car and current setup.
Head Unit: JVC KD-A605
http://resources.jvc.com/Resources/00/01/15/GET0580-001A.pdf
Subwoofer: Kicker 15" Solo-Baric 2 Ohm L7 in some type of box. Box measures 21" length x 17" width x 16" height
KICKER | Solo-Baric L7 15" 2Ω
Amplifier: Hifonics HFI 1000.1D
Hifonics HFi1000.1D (HFi 1000D) Class D Monoblock Car Amplifier
Car Speakers:
Front Left and Rear Right are 6 3/4" stock speakers (wasn't able to find more about those) (8 ohm)
Front Right and Rear Left are 6 1/2" Kenwood KFC-1665S speakers (4 ohm)
Kenwood KFC-1665S Sport Series 6-1/2" 2-way speakers at Crutchfield.com
The Chevy 1999 has a stock 100 amp alternator and 525 amp battery with run down protection
I've attached some pictures of everything.
She told me she is willing to spend $1000, and that the vehicle is already plenty loud, but it sounds like crap in terms of actual sound quality, compared to my 2 12"s and her friend's 2 10"s. Lots of distortion, lyrics aren't very clear, etc.
She wants more of the crisp bass and probably better speakers I'm assuming.
Thanks a ton for all your continuing help everyone!
Head Unit
Subwoofer sitting in vehicle
Subwoofer Length
Subwoofer Height
Subwoofer Width
Right Rear Door
Right Front Door