Kieth Black block

A while ago I emailed KB about there aluminum HEMI block. I received an email form them, this particular line has me wondering

""Race Ready". All you need to do is a final wash and start assembling."

They made mention several times of the block being machined to my specific specs. I am hoping to buy a block in the not to distant future and am wondering how true this is. I have seen the same claim on the World Products aluminum block as well. I thought different style rings required different hones? How could it be finish bored if they do not have the pistons that will be used in the block? Hmmmmmm