A company called Q4 Services can supply aircraft simulator projector CRTs. I spoke with them at a trade show a few years ago and I believe they have the ability to rebuild the projection CRTs. I have no idea if they have any capability for television CRTs. As you would expect, the prices are high for the very limited numbers of simulator CRT that are made and still in service. Here is a link that may be of interest:
http://www.q4services.com/productsfull.php