We put a SRT 6.4 cam in my sons 2011 300 left cam phaser stock put it in stock motor is 11.3 compression forged wiesco pistons K1 rods lightly ported heads SRT headers stock exhaust car has great power flat pulls hard all the way gets a easy 25 mpg on 91 and still has sad 2.62 rear gears and comes out of the hole great for that gear and car weight put in the cam and run it you will be in love..