Yes they are pedistal mount, sorry about the adjust part, had my hand in too many honda engines.
Other than valve cover gaskets and timing cover gaskets, I've never had to mess with a valve train in a 4.0 or 2.5 even with 200K miles, thew in a head gasket decked the block and head smammed it back together.
An intresting read. and some good illustrations
The pain about the lifters in these engines is the heads have to come off to remove them. see the third part of that how to.