This is a mistaken assumption. I have ported many FS9 and FSX vehicles to V4.I have an incredible TU-144 installed for FSX, but it cannot be ported to P3D V4.
Porting FSX NATIVE 3D gauges wouldn't be easy. If you wanna try and port it here's the link:This is a mistaken assumption. I have ported many FS9 and FSX vehicles to V4.
It's pretty much all possible, depending on level of commitment. In that regard, I really doubt anything currently available will match the level of commitment thus far seen in this thread.