I misidentified the Bunby Heli replacement in this hack, after recognizing that an enemy from 'Mega Man 4' replaced them instead of an enemy from 'Reloaded'.
Super Mario Kart: Super Circuit Demake features all 20 tracks from Mario Kart: Super Circuit and all 4 Battle Courses too, as well as edited color palettes to make the tracks more resemble that of Super Circuit’s, and a slightly altered item probability table.
A small note: in Mario Kart: Super Circuit Yoshi Desert and Bowser Castle 3 are both in the Star Cup, in this hack Star Cup ends with Bowser Castle 3 and Yoshi Desert is at the beginning of Special Cup. That way there isn’t two Bowser Castle courses in Special Cup.
ROM / ISO Information:
Database match: Super Mario Kart (USA)
Database: No-Intro: Super Nintendo Entertainment System (v. 20180813-062835)