Can you identify 3 holden 6 engine parts please heads 7420081-L5-5 and 7420081-A294-6 and a block L243-3-M67107-HP?

The Holden 6 engine, known for its robustness, features several key components. The cylinder heads you mentioned, 7420081-L5-5 and 7420081-A294-6, are designed to optimize airflow and combustion efficiency. The engine block, identified as L243-3-M67107-HP, serves as the foundation for the engine, housing the cylinders and providing structural integrity. Together, these parts are essential for the engine's performance and reliability.