Best format for projecting onto building?

Hi everyone,

A bit of advice please.  I'm finishing a project for someone, and can't quite figure out the best format to save the files in.

In essence, an abstract drawing is going to be muralized on the side of a building. The artist asked me to simplify the drawing, match it with pre-selected paint colors, and create paint-by-number style maps.  The maps will then be projected onto the building for painting.

I did the work in Illustrator, and created a PDF set for printing, but what format would be best for projecting? I don't have the dimensions for the side of the building, so the graphics need to allow for stretching--which rules out a static pdf. I was thinking SVG or EPS, but since it's not a web or print graphic, I'm not sure.

I'd appreciate any thoughts you might have!