Hello,
I just bought a complete 2016 5.7 Hemi from a truck with the plan to put it in my 68 Dart. The engine has 11,000 miles.

The plan is the CASCAR intake with fuel rails, 4150 throttle body, Holley HP and harness. TTI headers.

I hate to tear it apart with only 11,000 miles, but I think a camshaft upgrade is in order.

Would you?
Stick a 6.4 cam in it without making any other internal changes. Is that possible?
Or, along with the 6.4 cam delete the MDS, change the MDS lifters, and new springs.
Or use one of the Comp VVT cams, like the 270 or 274 with MDS delete, phaser lockout, new springs.

The Dart has a built 904 with a 3500 converter and 3.73 gears. My end goal is a DragPack style engine for a street strip car.
Thanks!