Hank maybe you know it already but Print Scale does ejection seats for the Airworld F-5 with fabric cushion. They look nice I just discovered it by browsing his jet section. Also I got word from Airworld about the twin seats cockpit they are more than 700€ which I think is kind of ridiculous price especially that they have a very "toy" look.
I will probably do a balsa/ply "bath tube" for either seats, attached to each side of the fuselage or special formers if needed, then start from here with setting up the seats, instrument panels with gasket and side panels.
Hopefully I hope to bring Scalecockpit.at to the party. He does magnificient work with instrument panles for a broad variety of models but unfortunately not for any F-5
I am currently browsing the plastic scale models forum as there are quite many resources out there for details work, including the instrument panel and side panels.
You had a stand at JP ? Maybe we met there ? Greetings