In my project, I have pistons with the following markings:

on the crown:
90.86
1

Inside:
ML3-1
and
NORAL
9111R2 X
4 .87

My machinists (one shop closed down mid-project) installed new liners
and bored them to 3.552". This translates to 90.221 which is below the smallest spec, so I probably need to send it back? I have the factory pages
with the numbers quoted above.

I need a source for oversize rings. Any suggestions?

thanks,

Stuart