If you go to Vans Aircraft, select the model (RV-8) and scroll down to the three-view, you can do a "control"-click (or right-click?) on the image and save it as a .gif file. You can see a .gif file with a variety of graphics programs, and scale it up to what you need.
Sorry though, it would be useful on both a PC and a Mac, so it may not fit your needs

I don't know where to find one that would work on a PC but not a Mac.
