Felis is a well known developer for the X-plane platform.
He hasn't created many add-ons, but those he brought tolive are probably the most advanced simulations of their rw counterparts.
For quite some time he has been working on the 747 Classic. here's ome news:
https://fselite.net/previews/felis-747-classic-autoland-video/?utm_source=rss&utm_medium=rss&utm_campaign=felis-747-classic-autoland-video
a few changes and you could use psx as the base
At least, some steam gaugues and a flight engineer station :-)