You can buy burger motor sports. Search BMS website it is listed under the stinger and it’s on sale now. Temps have decreased about 20 degrees on average you really notice the difference in hot days and when drive the car spirited. Definitely worth the money.
It’s very useful if you plan on doing any tuning to the car as tunes will increase the heat it gives out. But even if you don’t do any tunes it can still be useful for longevity of the car but not needed (unless you do hard style driving or live in year round warm environment)