Dumbutt Question.....

Solid lifter slants, have splash oiling on the lifter base, and just, for lake of a better word, drip oiling of the lifter bore.
Hydraulic lifter slants, have the lifters lubed, through hollow pushrods, rocker arms, and rocker shaft.

Ok, so on the hydraulic slants, the lifters oil "backwards" from top through the pushrods and into the lifters, correct? Then I need hollow ball and cup pushrods. That's what I thought I was lookin at at the oiling diagram for the slant. Thank you.