The lifters are designed to cut cylinders via deactivation while cruising on the highway (to improve Mileage)
The Knock sensors cut back the timing if there is any detonation.
keep up the great build!
It's a 2006 Magnum SRT8 6.1 so no VVT or MDS
I think the EFI Source MS3 Gold Box and Harness may have Knock Sensor provisions. Will have to research some more.
Thanks,
Randy