I just finished building a full size F-16 Sim using 3 In Focus LP70 projectors all hooked to a splitter along with a wide angle lens on the main projector. It works good but I am still working out some issues with the video display. I found the projectors and wide angle lens real cheap on Ebay. I am not saying this is exactly what you might be looking for, but it works for a novice in building sims like me. My curved screen in front is 12ft across and the sides are 8ft each. I used real tin foam board from Lowes curved into an egg shape top and sides. The whole thing only cost about 40 bucks. My problem is finding a program that will allow me to move instruments and unlock views so I can set them where I want them. Don't know if this helps you, but half the fun is doing.