How smooth does the top of the block deck need to be for MLS ?

MOPAROFFICIAL said
You dont need an MLS or cometic...but you do need to cc the heads.
At the moment, I dont forsee any issues of having to high dynamic..but you wont know or be able to make the most of it either without knowing what you got.

Been trying to tell him that. Like talkin to a brick wall. And I can say that cause he's my brother from another mother.