Weiand Stealth 8022 - bad ports, can it be fixed or should I send back?

That thing is horrible. Line a gasket up and see if it can be matched. That being said it would be going back.
I wouldn’t even waste time putting a gasket on it when it’s obvious that it’s a seriously flawed casting. If this crap is what you can see, imagine what’s inside that you can’t.
It looks like the new guy in casting did this on his first day.