Piston Ring Type
 

1993 Bonneville SSEI
There are 3 different ring styles that could be used on this engine:
1) 1.5mm top groove, 1.5mm second groove, 3.0mm shallow oil groove (0.170"
or less oil groove depth).
2) 1.2mm top groove, 1.5mm second groove, 3.0mm deep oil groove (0.190" or
more oil groove depth).
3) 1.2mm top groove, 1.5mm second groove, 2.0mm deep oil groove (0.190" or
more oil groove depth).

which one, how do i find out?