For under 7000 you could find maybe a mustang. You're not gonna find too many stock really fast cars for that price. A friend of mine paid 6k for a 94 civic hatch with a full type-r motor and it's very quick, plus it handles good. And economically, a civic is much more gas- efficient than a mustang. I think if you would be just a bit more open minded and not look for a stock car, you could find something a really good. You could also look for like a 240sx or an acura integra gsr. But good luck finding one stock.