That was an example (nothing wrong with cast pistons) and the piston in your picture isn't low compression either. Good luck with your project.

 

Thank you for all the information high compression means a little more boogie 💪🏼

 

What size do you need ? I have a few new sets of of old stock pistons & rings I've collected over the years. Not factory but not junk either and they were cheap.

 

I will need to borrow a micrometer to get sizes thank you i will let you know