I would start by checking crutchfield to make sure you have the right sizes, or being an older car you can pull the current speakers and measure to make sure the new ones you buy fit properly. Component speakers are nice, get the biggest woofer you can fit and afford.
There are a number of good brands, it depends on how many speakers and how high of quality you want. If you are just doing speakers without a subwoofer (most think a good pair of 6x9 speakers will be good enough to not need a sub), you can get away with 1 decent 4 channel amp. I like JL audio, Alpine is a good brand, and I am sure there are others that are along the same lines. I think Pioneer and kenwood are similar quality, but lower than JL or Alpine. I wouldn't do rockford personally, but I have no experience with them, kicker wires are good, but I am not a fan of their speakers or amps either.
For $1000 you can get 4 decent speakers and an good amp, look for about $250 a pair for speakers and a $500 amp. try and make the RMS numbers on the amps match the speakers, so if the speakers say 150 watts each, you will want a 600 watt RMS amplifier. you can fudge the numbers a little, and more amp power than the speakers is better than less, and isn't going to hurt the speakers (kinda backwards but that's how it works).
let me know if you have any more questions. and fyi this is all just personal opinion, and free advice, so take it for what it's worth.