Need help identifying some cp pistons

[rowdygst]

I have a set of evo cp pistons, they ain't got no marking on the top or anything all it says under the pistons is 84 2A . Can anyone help me find out what compression they are? Also I need a set of rings for then do they have to be cp rings or any others would work?


Thanks

 

[BogusSVO]

Are you sure they are CP pistons?

Posting a couple pics will be helpfull

 

[rowdygst]

I can't post pics from my phone, but yeah under the piston is says cp 84 2A

 

[rowdygst]

anyone got any info?