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Is this a difficult repair? I had the shop do it last Thanksgiving and the OEM one looks like it has cracked or will give out soon. It is right in the middle where the joint is.
I need to replace the starter this week too so pass along your tips. 👍🏻

Then they quoted me outrageous prices for repairs I didn't need.

There's 2 intake valves, their area is combined, so is their lift. There are some flow losses, particularly at lower RPM(for the 4 valve engine), but all things considered, a 2 valve engine needs roughly twice the valve lift as a 4 valve engine to get roughly the same airflow.

When hotrodders talk about a .600 lift cam, they're talking about a cam that operates the pushrod 6 tenths of an inch. The rocker ratio plus the pushrod displacement gives you the effective valve lift.

On a overhead valve engine, there is no pushrod, only rockers/follower, or direct cam to valve action.

https://www.racinghalloffamecollection.com/wp-content/uploads/2018-Vettel-_-Raikkonen-Race-Used-Scuderia-Ferrari-SF71H-F1-Rod-and-Piston-22_0004_Hue_Saturation-8.jpg
https://www.racinghalloffamecollection.com/wp-content/uploads/2018-Vettel-_-Raikkonen-Race-Used-Scuderia-Ferrari-SF71H-F1-Rod-and-Piston-99_0005_Hue_Saturation-3.jpg

You can see the piston is aluminum and is anodized, the anodization allows the ring lands to have a better surface finish, and strengthens the structure of the piston. You can also see the trace of the turbulent jet combustion as it fans out from the center of the piston, and the high temperatures near the quench area that have discolored the metal.