Road Runner Nest

Hi guys

Anyone knows the correct part number for a 72 Roadrunner GTX with aigrabber 727 transmission? It's a june 72 production car.
Would the 3515848 ok (found another user here with a june car with this trans) or does it have to be 3516868?
I know a guy with the trans 3681057 around here... it's written 72 440-4 280HP with damper weight provision. Would that be correct for my car? I mean, was it possible that Mopar installed this or no way?

Thnx

nobody with a 72 RR with automatic that could tell me his part number on his matching 727?

From the 72’ parts manual, I couldn’t locate a cutover date early vs. late for the application. Couldn’t get much later than a June production date I would think.

But the 057 has this damper weight provision, out 72 GTX didn't have that, did they? That's what confuses me if the 057 is the right one?