i've got a $3000 system in my car...
I had a connection tho... my best friend hooked me up real good... I bought the 2 12" 1000watt audiobahn subs, giant audiobauhn amp, capacator, and wires for $300 used.
then a new subbox, and 4 pioneer speakers for $210 no tax.
thats what ya need and try to do...
Stereo isnt that important... dont blow a grand on speakers... i had no speakers in my car just a headunit and the option i chose was cheap in comparason to the value...
Find some one who has already bought alot of stereo in your area, they will save you the most