Honestly, if you modify a borla catback with self proclaimed "rice" mufflers, you are a complete moron. If it's just a stock exhaust with a Borla muffler, change the mufflers. Considering Borla cat backs go for $400+, that is plenty of money to sell it and build your own rice pipes. That is honestly one of the most idiotic things I've ever heard. And also for the record, I am nowhere near 40.