Reuse your stock 5.7 intake or hunt up a truck 6.4 intake.The alternator is in the way to use the car intake.The trucks mount the alternator right where the cars intake makes the swing over to the drivers side,the truck intake swings to the passenger side and mounts the airbox on the passenger side,while the cars mount the airbox on the drivers side .You'll need to reuse your timing cover,as they're differant. You'll also need to swap oil pans and oil pump pick-up tubes as the cars use an aluminium front sump pan that won't fit a truck . You'll need to have it tuned,and the car 6.4 uses at a mininium 91 octane fuel,and is happier on 93 or 94.
Being the engines out of a Charger it'll have MDS,i don't put much stock in MDS being the cause of lifter failures,as the non-mds lifters fail just as often as the mds lifters do,throw in the fact 6 speed Challengers which are non-mds suffer lifter failures just as much as the automatic versions with mds do.
You could throw an aftermarket non-mds cam in it,while you have the engine apart to swap timing covers/oilpans etc,as it's alot easier to put a cam in the engine while it's on an engine stand.
To make life easier you could also reuse all your old sensors.
You do realize you're going to have to tune the truck afterwards,and buy the expensive higher octane fuel for it to be happy and live