Not really a struggle, but I did decide against making all the footage "old film" style.
If you see the clip where the Mustang's dive into the 64 FW-190's it starts "old film" then goes to IL2 (with some effects). I originally was going to keep all IL2 footage "old" but, after reviewing it, it just didn't sit right for me.
I also tried film grain, but again, it just didn't need it.
The still images from IL2 (illustrate Tom Batey circling his downed wingman and Jack Kinney shooting down a 190) had the grain effect, which looks fine for stills, but I just didn't like it when the video was rolling.
Maybe Part 3.......NOPE!!! Not going to happen
Thanks for the question and interest, cheers, MP