Presumably the guy who runs this will be able to say whether his customers have ever reported an issue to have the broken-in cam/lifters in a different block to his rig.
And/or what other conditions he'd consider necessary for success even with the broken-in cam (e.g. lifter bore alignment or clearance within some tolerance etc). Wouldn't hurt to ask what he has learned, I imagine in principle that should be relevant to Mopars as well as Fords.