Ok I'll bite, why didn't you just modify a P&D hobby F unit can interior? Please don't take this the wrong way your work is gorgeous... I'm just suggesting the P&D kit for savings of time.
Hi PRR, great lead on detailed parts.
Honestly, I did not find P&D Hobby Shop when I first searched for E8 cab interiors. But I just looked at their website and I will be using them for detailed parts in the future. On their website they offer a full EMD F A unit cab kit part #PDP5790K but they did not post images of whats included inside the kit. I will reach out to P&D Hobby Shop for more information.
Thank you for the lead!