My my build consists of Stock LQ9 Block, Stock 243 Heads, Upgraded Springs, and Pushrods, Stock LS6 Intake with just a Cam Change -- 4l60E Trans
422 RWHP / 397 RWTQ
3050 Lb Malibu
Ralph
P.S. Clean Low Mileage LS6 Intake 300-350 and LS6 Heads Low Mileage 500-600 pair. Average Price