Why not change the shell to a grey one?
For burning another cart, it looks like it is a more unique mapper then your typical NES game. It says it's a 'Camerica' based on the tuxnes mapper list. Looks to be a custom mapper to that specific publisher under the same name.
Based on the WIKI it looks to be largly a clone of UNROM
https://wiki.nesdev.com/w/index.php/INES_Mapper_071
Could maybe hack something together if you tried at it. However that mapper looks to have a feature that UNROM lacks.
"$8000-$FFFF: In the "Quattro" games, A16 and A17 are controlled by a separate register, allowing 64 KiB super-banks."
Also your game of interest looks to have some specific to it that may present dificulties burning to simple UNROM
"Some of these games are like Battletoads in that they're very picky about timing and use some seldom used aspects of the NES, despite the mapper itself being as simple as the discrete logic mappers.
In particular:
Bee 52 uses the sprite overflow flag ($2002.5)"
WANTED NES: Box- Bomberman II, Bubble Bobble 2, Chubby Cherub, Color A Dinosaur, Pro Sport Hockey, Volleyball
Manual- Dragon Fighter, Jetson's, Operation Secret Storm, SCAT, Stack Up, Stinger, Sword Master
Manual and Box- Arkanoid, Jimmy Connor's Tennis, Little Ninja Brothers, Mickey in Numberland, Sqoon