Steen in NW USA makes the decent rollers that Herbert used to sell
Herbert is no longer in business don't order from there but I have used 829-16 comp 440 solids in early Hemi before--they are solid body and tall enough to work
Rueben Cams in Calif used to grind all of Herberts stuff and they have the cores --know the grinds and may be able to supply the lifters as well or see Rickys garage om Youtube --he is west coast early hemi Guru and can supply lifters easy as pie I bet
Why mess with that dinosaur stuff pictured--they belong in the Garlits Museum