1976 Dart Parts into Early A?

TNT440_Cbody said
Will the rear from a '76 Dart fit in an Early A?

Yes.

What rear will a 76 likely have?

Standard equipment was a 7¼" with 2.76 gears (automatic trans), 3.23 gears (manual trans). Optional equipment was an 8¼" with 2.76 (auto) 3.23 (manual).

Is there a market for body/interior parts from a '76?

Are they super nice?