I was nearly a decade late to the phenomena which is Firefly (and its movie couterpart, Serenity)
It has a huge allegiance - not to be confused with the alliance - of people, who have devoted months and years to create fan work, 3D models, props, replicas, etc.
I'm working through a tutorial by Rigel and Treybor of the Foundation3D 'Lightwave' forum. The specific tutorial that I am following can be found Here
Problems? Well, I'm producing this thing in Blender, which I have no experience of using (but I'm working through the tutorials and it is an enjoyable experience). I was able to rig up my second monitor and use it as a second camera in Blender, so now I can view two perspectives at the same time to check that everything looks good 'n proper. I would highly recommend other designers to do the same if they haven't already!
So here's a very quick snapshot - A couple of hours in, but then again this is purely from scratch with the software, and I have been working through tutorials.
I did have a Grob Tutor project, but that has effectively been cancelled. I felt limited by the software that I was using, but Blender has given me a few more options... So I may restart that project.
I don't expect this model to ever make it into Flight Simulator, for a couple of reasons. Firstly, the tutorial took over a year to produce, and I have no training in this software. Also, I have no idea how to make FS working aircraft, and thirdly, the model will probably be too massive for FS to handle. I would like to produce a highly detailed cross-section of this aircraft though, and I have a few ideas which I will take to university to pursue.
So more of a fun project, and it is a lot of fun so far. Let me know what you think. I know that this project is currently just a simple lathe, but it has taken a good long while to get right