Hydraulic Roller Lifters w/LA Block?
Sorry nub, I just can't believe it. Whoever is telling you to NOT have the base circle lowered is full of BS.
I know at least 4 local guys here who have done what I did. It works.
My brand new Lunati just came last week ground on a 1.040 base, and with Mikes lifters all is good. Without the lowered base and Mikes lifters, it would be a disaster.
What year is your block again?