Hello
I think the song is called "Wind Carry My Words" ("Kaze yo Tsutaete"; game version) from Mega Man Battle and Chase that you've used in the end of the older version of "When Engines (& Car) Were Sick". https://downloads.khinsider.com/game-soundtracks/album/rockman-battle-and-chase/125%2520Wind%252C%2520Carry%2520My%2520Words%2520%2528Game%2520version%2529%2520~ROLL%2520Special%2520Ending~.mp3