Alright guys I need your help. I have a sbf 408 with 14-1 comp. N/A. Best of 9.92 so far. I have been running open headers and the carb is a proform 950 with 82 primary and 86 secondary jets. C12 fuel. Today I put on a dual 3" exhaust with bullet mufflers that exit in front of the rear wheels. Class I want to run requires mufflers. The car is running very lean since the exhaust was put on. Is there a general rule of thumb as to how much jetting I should add? Any input would be greatly appreciated.