Stop in for a cup of coffee

Question for the group.
A friend, who has money, is looking at a couple MOPARS.
Both cars are done, nothing to do.
One is a 440 and one is a 426 Hemi.
He reads the Hemi's are some what of a pain have to adjust the lifters and other type maintenance.
Never had one, know little about what the require.
Comments??