Would like to see a photo of that. I've not seen a set of bam lifter fully shrouded, as to do so would compromise wheel diameter. (but possible, sure).

What I did is order lifters first, then drop them to within .100 of uncovering oil gallery to determine base circle. Then from there, bring it to .100 of max lift before uncovering oil gallery to determine max lobe lift.

Probably could go further but didn't need to for what I'm trying to do.

Guess what I'm trying to say is, if you're trying to get the most out of an unbushed block, IMO, the best you can do is measure.