If your print has a grey area between the sprocket holes labelled with the Dolby Double-D logo in the middle like the picture above, then that means that the print has a Dolby Surround track.
I’ll ask my buddy to check! The reel is currently in his possession since he just got it scanned.
If you plan to release your scan running at the original 24fps, then convert the DVD audio— which runs at 23.976fps— to run at exactly 24fps. You can convert the runtime easily by using eac3to. Assuming the short was properly scanned at 24fps, you should have no issues marrying the video and corrected DVD audio together. If the opposite is true— video running at 23.976fps out the gate— then just rip the DVD audio and sync it to the film scan. Again, shouldn’t be a problem.
Thanks for this info - the print was scanned at 24fps so I’ll definitely need to make that adjustment. Thanks for offering help too, I’ll make sure to reach out should I encounter any roadblocks!