Ya, I want the amp to power my speakers and my sub, once I get it. I checked out the JBL Power P-80.4 you listed, but am wondering if that is going to be much better than my decks amp (since it is 50x4, and this JBL is listed as 40x4).

I found the Boss Ripper RIP-895 which is listed as 220W x 4, and is a little cheaper than the JBL Power P-80.4. So I am thinking of getting that, unless there is more to it that I don't see.

Here are the full specs on the Boss:

Price: $210
Amplifier Type: Multi-Channel
RMS Power: 220W x 4
Bridged RMS Power: 400W x 2
THD at Rated RMS Power: 0.01 %
Speaker Level Inputs: Yes
Preamp Outputs: Yes
Built-In Crossovers: HP/LP
Bass Boost: 0 - 18 dB
Frequency Response: 20-20,000 Hz
Channel Separation: n/a
Signal to Noise Ratio: >105 dB
Fuse Rating: 2 x 20 amps

And here are the specs on that JBL:

Price: $245
Amplifier Type: Multi-Channel
RMS Power: 40W x 4
Bridged RMS Power: 160W x 2
THD at Rated RMS Power: 0.05%
Speaker Level Inputs: Yes
Preamp Outputs: No
Built-In Crossovers: HP/LP
Frequency Response: 10-50,000 Hz
Channel Separation: n/a
Signal to Noise Ratio: >110 dB
Fuse Rating: 2x20 amps

I will be letting a pro do the install (at best buy or good guys).