For rebel galaxy is there big mod from darphnix, this mod allows ride more ships, fighters include. Works on steam and gog version too. For ripping purposes i did little mod for this big mod, it allows review and buy almost all models from start, price is just 500 credits, this is real cheat, if you intend play game.
If you want try, then names for mod pak files can have format data2.pak, data3.pak,... Just you must check, if has set date from older to newer, otherwise older datax.pak with higher number will be ignored.
Several models you can find on merchant, mercenary, independent or pirates stations too. Just have neutral or friendly status.
Ripping is simplified, when you are alone in space, so just flay away from others objects and then capture screen.
And for unity, i will reconsider, if it is worth effort for several models, which i want try in SW.
There is my addon for darphnix mod, it can be made for vanilla game too, but this was simplest way for me.
https://ulozto.cz/!yS7zKiS4Sf0H/data3-pak