Go to Mid America, or probably any aftermarket supply house. They have two C 5 dealer posters 11' x 4'. That should be big enough for you. They also have lots of smaller signs, retro signs and cute stuff. Attend some of the larger Corvette gigs and you'll find many 24 x 36 posters. But, I guess most all the new posters are of C 6's. Also, I'm seeing more and more copy shops that can reproduce your photos into 24" x 36" posters, or even larger. Try Google search for corvette art or corvette posters or automobile art. If you find something really good, let me know.