How to tell if inlets matched already

[Fr05ty]

Hi. How can I tell if I have matched inlets before I pay to get this done?
172cup here are a few pics if any help

One pic is of the port by valves.

Cheers

 

[Jekyll]

No there standard.

Posted is normally bigger and has a smooth inside that's been bored out.

 

[Fr05ty]

Brilliant thank you. Thought as much, but been reading about gasket should be smaller. Anyone offer club discounts or any recommendations who to buy them from?