So my son has a 2011 charger 5.7 ex police car. I want to replace the lifters as I know they are most likely getting ready to fail I figure at that point may as well slide a cam in it. This car was well taken care of I know the cop that drove it from a small beach town near me it was well maintained has 90K miles on it. What is a decent cam that is still somewhat manageable to tune? I plan to delete the MDS and I know I will have to limit the VVT. The car has the 308 gear option as well. I would like to get this thing in the 12s it has run low 13s already.