73 CL350 Piston and Ring Size?

Andrew21502

Been Around the Block
I just completely tore apart the top end. I got the piston off and took it to the local shop to measure it. They told me 2.5 inchs, which is 63.5 mm. However, i need to order new rings. It doesn't seem over-bored, but i wanna make sure before i spend money on rings.
What is the stock piston and ring size?

This is for a 1973 Honda CL350
 
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