Still, I do not think it's a good design, high swirl/entry design for what?

The 4 holes, do they have a nice entry radius', or is it just four sharp cut holes?

It will work when forcing air through it,but forcing air & fuel, don't think it would be good for that.

What are you thinking to use it for?
Got a pic of it w/the bonnet removed showing both pieces?
MBHD


12 port SDS EFI