Mopar ( Tube Kit ) info requested !

The other benefit of the tubeing or bushing of the lifter bores is if your lifter comes out of the bore for some reason while running, especially at higher rpm’s, you will not have a big oil leak and starve the engine of oil.

At the rpl’s you intend I would also screen off the lifter valley areas so if parts do break they do not end up getting down into the rotating assembly or oil pan pickup.