I’ve only had a couple sets of Stage V hemi heads in my shop.

If purchased as “bare heads”, they are very far from being ready to run.

I had flowed one in a semi-finished state way back(no porting), and they were rather unimpressive like that.
It was clear that wasn’t how they were intended to be used.

I’m sure a proper valve job, along some bowl work and blending the cnc’d opening into the runners will perk them right up.