Dude, this is what I've been wanting to see for a good while. Thank you so much for doing this. I always wanted to know what GT's English NEPs would've sounded like with the Japanese music. I sincerely hope you plan to do this for the rest of the show.
I have something you might like I'm recreating the whole series and it includes the next episode preview with the English dub mixed with Japanese music archive.org/details/dbgt-1-v-2