Appreciated, but equally I've personally helped out a few people with sponsorship deals in the past. In fact, I've helped someone out this very month.
Unless you have a very specific plan of action, including honest and clear justification to each company about why they should give you products to use on your car, then frankly you're pissing in the wind.
The Supra showcar scene is full of people trying to get anything for nothing, so the car really does have to stand out.
Sorry my first response sounded negative, but at the time I couldn't be arsed to type all this out. Long day