It's going to be difficult to make any recommendations without knowing the file structure and what it is, specifically, you want to achieve. But, if everything is vector ( which would make sense ), then there are a few different ways to manipulate the artwork to 'fit" the template. Even if everything is bitmap, there are still a few things you can try. One that comes to mind is scaling the image to fit the template. It could also be a simple matter of "moving" the artwork into the center of the template. Any overlaps you will not have to worry about ( except where they overlap ) because you'll end up wrapping the print onto the motocross piece.
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