That would be awesome if they did the I1sa next in line. That K-4 was to be complete by the Altoona Pennsylvania Railfest 2003 but they are now saying it will not be done till next year. I would like to see the I1sa running. It would be back to good days for the elderly people. I know a couple of people who worked on the Pennsy. I found the website for the I1sa by accident. I was looking for model railroad I1sa's and found that link. If enough money was funded for restoring of the engine. I know that a couple of funds was passed for the K-4.