The car has been sitting awhile and I am now just getting back into it. I have a stock lg4 with a hooker 16820 cat back. Does anyone know what model header allows me to keep the AIR system and direct bolt on? I am looking for a new system from headers back that is bolt on under the hood. I know i will need a new y pipe to catback connection.

thank you

http://www.summitracing.com/parts/hok-16820hkr