Yes, same one, both transmissions
Bill Rolik did a nice breakdown a while back, this is accurate to the best of my knowledge, also noted below are Frank Badelsons notes.

Bill Roliks list:

3514520 Early (AVS)
3549318 Late (AVS)
DR1114421
70 440 4737S,4739S, 4741S, 4740S
Hex head with cap, no integral bracket

3514892 (AVS)
DR1114442
70 340 4936S, 4937S
Round head, no integral bracket

3438303 (AVS)
DR1114442 or DR1114447 (Have reports of both)
70 440 4738S
71 440 4968S
Hex head with cap, no integral bracket

3438777 (Holley)
DR1114441
71 383 4667A, 4734A, 4668A, 4735A, 6191A, 6193A
Hex head with cap, no integral bracket, but includes wiring harness

2875975 (Holley, AFB)
DR1114429
70 440+6 4375A, 4734A, 4376A, 4144A
70 340+6 4791A, 4792A
70 426 4745S, 4746S
71 426 4969S, 4970S
Round head with integral bracket

3438338 (Holley)
DR1114443
71 440+6 4669A, 4670A
Hex head with cap

3412059 (Holley)
DR1114420
69 440+6
Hex head with cap

3438333 (Same as 2875975) (TQ)
DR1114429
71 340 4972S, 4973S
Round head with integral bracket

Listing by Frank Badelson:

69-1/2 440-6: DR1114420 (hex head)
70 340 4 bbl: DR1114442 (round head)
70 340-6 and 440-6 and hemi: DR1114429 (round head)
70 440 4 bbl: DR1114421 (hex head)
71 440 4 bbl: DR1114447 (hex head)
71 440-6: DR1114443 (hex head)