I had a gen 5 502 and just got a gen 6 not sure if the flexplate are balanced different or if they interchange? does everything else interchange

I know, as much as a Mark IV, Gen V and Gen VI 454 flywheels look almost identical they are all different. Had to have my motor balancer show me because they look so much alike. Not sure about the 502.

Anyone else

the 5 and 6 502 flywheel,s are the same,the mark 4 is different.

Thank you much