I am looking for the long OOP Cobra Company 1/35 CH-47 Chinook Interior set. The one that has the interior wall beams and supports.
Lone Star Models has acquired the Cobra Company brand. I would check with them, probably your best bet.
Edit to add link
https://lonestarmodels.com/store/
Lone Star has the molds, but hasn’t been able to get to creating them yet. I am looking for someone who is willing to part with a set. I can wait, just don’t want to!