ATI super damper?

They’re speedpro aluminum pistons.

I believe all the Speed Pro flat top pistons would be pretty close in weight to factory pistons.

I’m planning on eventually putting this 440 in my RamCharger so until I’m not going to tear into it

If that vehicle has an auto trans, I’d suggest buying the correct B&M weighted flexplate for the cast crank 440, and pair it up with a neutral balance converter.

B&M 10237 B&M Flexplates | Summit Racing