13 Aug 2019 Extreme Katy Facebook August 13, 2019 Extreme Katy Next up a new C7 Grand Sport with a set of @corsap… Next up a new C7 Grand Sport with a set of @corsaperformance headers and X-Pipe along with a @afepower cold air intake and custom tune!!! #extreme #extremekaty #extremeperformance #extremeoffroad Source