From what I’ve been working on so far, the European DVD is in 25fps and widescreen but has less details than its bluray counterpart, which is indeed in 23.976fps. On the other side, the original fullscreen DVD is in 29,97fps so there is no proper way to get back the original framerate without losing quality or tweaking sources for this project.

I don’t know what would work best between those two options :

Change framerate to fit original pitch
Change pitch to fit both framerate and pitch