you could try this amp:
http://www.hifisoundconnection.com/S...id/0/SFV/30046
$145.99
200W RMS x4 @ 4ohms
80A fuse (tipically the fuse will tell you true power handling (RMS 1000W = 80A (fuse size) * 12.5V (typical car battery power output)...
102dB SNR
THD <= 0.01%
I have been looking for some reviews, but i cant find any..all i can find is that it is a disscontinued amplifier...maybe a few years old...i dunno. My work machine is blocking most of the sites, and my lunch hour is almost up.
I personally have no experience with this amplifier, but it seems it will fill your needs.
ill keep checking for you if i have time and if i come up with anything else i'll post it. but that amp seems decent from the specs.