Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
That's also really cool about the lettering set you have and your Dad's work on the YB-49. Did he happen to work on the YRB-49 as well? It's also lucky for us that you were able to find a manual for the radio set as well. Your work on this bird is far surpassing anything I was expecting and I think we're all going to be truly grateful for it.

...I've been using the F7F Tigercat project as a training platform to achieve a level of proficiency equal to the marketplace. I've been thinking, very seriously about the YB-49 & YRB-49 as serious projects for release as payware...
Gordon I vote for YB49 all the way. We need these old relics as their story hasn't really been told in this new Era of FS. We've been inundated with GA aircraft and the entire experimental arm of aviation is lost. What brought us the advances and paved the way for what we enjoy today and regard as common place. To me, great selection.