For <$1k, I'd still suggest some lighting mods.
-Try a HID retrofit. Meaning, try to retrofit HID projectors into you current headlight housing. Actually, for less than $1k you can have another, experienced, person retrofit it for you.
But here are some directions none-the-less, courtesy Matt @ TheRetroFitSource.com
http://www.theretrofitsource.com/for...wtopic.php?t=7
Some examples:
-What about window tinting?
-Maybe a new grill?
There aren't many cosmetic mods you can do for less than 1 grand other than lighting. As you already mentioned, bodykits and wheels are too expensive.