The good news is the heads don't have to come off for a cam swap in the new 3G Hemis. There are keeper sleeves that hold them up and out of the way so you can pull the cam without pulling the lifters. Pull the rockers, pushrods, and timing cover and when you spin the cam around it will push them up into the keepers so you can pull the cam out. Just did this on my 5.7 not that long ago.
