KB232 pistons different than kb107's?

The KB232 piston has a D shaped dish and are intended to be used with closed chamber heads. They will provide a quench area with the closed chamber and will have a lower compression than a flat top.

ALSO, they were intended to be used in magnum engines where the small end of the connecting rod is narrower than an LA rod. If you intend to use them with LA rods or aftermarket LA rods you will need to have the small end of the rod machined so it's 1" wide to fit into the piston.