Sponsorship HELP!!!

It's not that I want sponsorship to get stuf for free, but for a little help. I've already had some companies look at my car - small time companies like Street glow and G-Racing (small time rim company). Street glow said that they would give me stuff to add on my car but I would have to pay shipping..(don't really want to add to many neons..) and G-Racing told me they'll sponsor me - all I would have to do is buy a new set of rims every year. I would just pay for one rim and tire and they'll send the other three to me and I would only have to pay for shipping again. I didn't want to do G-racing because there rims aren't nice looking and not in style.
These companies foundme on the streets. I talked to two people that saw me on the road and pulled me over and started talking to me about there company. I don't think the same luck is going to happen with people that work at HKS, Greddy, and wings west. That's why wanted help.
But I know what you all are saying about having to do something wild to my car to get people to look at it. lol, believe me... I know there are a lot of civics out there.
Thanks everyone for the posts! ;-) -Rachel