Standard Exhaust Size for Sleeve?

Basically now I've sold my car I need to get the OEM exhaust back on it but where its been cut I'm told will need a sleeve clamp thing to go over it.

But what size is the standard 200 exhaust!? I thought it was 2" but saw a thread on here from 2011 and someone said its 60.5mm which is 2.38".

I know my Scorpion one is 2.5"/63.5mm so what do I need to do it?
 
A reputable garage should be able to get the correct part when the exhaust is changed over to save you the hassle doing it on your back under the car.
 
It should be just a case of welding it back up where you cut it buddy