one girl on here got a free stereo from a local stereo shop.. you could ask around. probably need a lot of visual mods that's what gets attention. crazy body kit and paint job. look to spend 5k on visual mods and then ask your local tuner shops and go to car shows guess that's how she did it. you've gotta have a seriously custom ride I think to get big name corporate sponsors like oil companys etc like the kind you see in magazines. a lot of people I read about in magazines get their first car all done up really nice and custom and then they get their second car done up for free from lots of sponsors. But don't think stock color with a veilside or kam kit is going to do it.
PS I thought in one of the guides or something in either this or the other forum there was a list of how to win shows. very expencive it's all about name brands and if you've got the expecive mods you get big points like turbos get like 300pts or something. so it'd probably cost you about what you paid for your car to do enough mods to have a show winning car, but if your into that it'd be worth it and someday could pay off and get it for free.