This is a hack of the hack known as Super Mario Kart Devanny Dark Edition Alt battle. 
In order for this to work you need the original Super Mario Kart Devanny Dark Edition

I provided a Super Mario Kart Devanny Dark Edition ips file.

More info here
https://www.romhacking.net/hacks/3916/
Be sure to use this patch on a USA rom just like the site states.
Once it is patched you will need to patch it again with the Alt battle.ips

Example
Original game (super Mario Kart) - rename it to Super Mario Kart Devanny Dark Edition

Use LIPS (Lunar IPS) to patch the files

Rename your newly patched file to Super Mario Kart Devanny Dark Edition Alt battle

Use LIPS (Lunar IPS) to patch the files

Good to go


Yes it is a doubble patch

I have lots more of these to do and in order to keep the theme I would have alot of work to go threw to prevent
doubble patching.

If you like this or have any sujustions please let me know at overgrouth@hotmail.com

Also feel free to contact me if this instructions do not work for you.