IMO (i owned a '00 Grand Prix GT before i bought my CSVT) - for $9-14k you would be able to get a more than very decent used '00-02 grand prix GTP with less than 60k miles.
very comfortable car, and
www.pfyc.com has plenty of stuff to do to it.
240HP (supercharged) is nothing to complain about, either.
4d version and '00 year would give you very reasonable insurance, and when i had mine, stock tires (don't know if you are planning on modding any) were awesome in the snow. never got stuck.
very reliable vehicle, very reliable engine (very upgradable engine, too).
i could also list for you the audio setup i had for that car - made the high school kids cry - not that that was a priority...
my .02 - go test drive one.
