Stealth heads vs Eddy performer rpm

I'll say this...
There is only so much room for changing port shape in an existing space and still have it be 'bolt on' or stock replacement.

so you can call them eddy port copys or you could call it as I see it, made good with the confinements they had to work with.
I say it could be consider a bonus if all they have to do is run an eddy cnc program on them.
remember they are both in the same bracket, one is just a lot more affordable and easier to knock off as stock [when painted]