Rollerlifters

[3W Hank]

I don't think today Crower ever will do them.

Yes the Ardun might work with ex Chevy lifters with a connection arm, but the FH don't.
I was into lathe bronze bushing and has a smaller diameter body inside where bearings is mounted and then a max diameter roller bearing.
Bushing with a slot for the bearing and pressed into block.
That might keep the bearing in place over cam.