See Notes Re Calibra
Calibra C20LET DOHC 16V 3/1992-7/997 Notes Pistons Have No Valve
Reliefs.
Some C20LET Engines run Forged Piston with Valve Reliefs
2966 Piston Compression is 8.8:1 Australian Version
2968 Piston Suits Engines with higher compression ratio 10.2:1 Export
Only
2967 Piston Suits Engines with 9.2:1 Export only