The hemi isn't an overhead cam engine,it utilizes 1 cam that's buried about 1/2 way in the block,so utliizing something designed to lubricate an overhead cam probably isn't feasable.
The hemi's cam lobes are lubed by the oil flung off the crankshaft,you're best option right now is to up the idle rpm,so the cam lobes receive more oil at idle,and don't baby the engine.The hemi's not an engine that likes to be drove easy by your Grandmother,it's happier being drove a bit on the aggressive side,as there's more oil flung onto the cam.It also should be run on a good quality 5W-30 instead of the 5W-20,and don't stretch out the oil changes,try to change the oil and filter every 5,000 miles.
Read the note at the bottom,this used to be in the bigger 700 page printed manuals until the gubbermint nannies forced them to remove it,as apparently the hemi won't meet the claimed milege numbers on 5W-30