Here is the list I have.
Match your correct year carb series number and year and it'll indicate which solenoid is required.
I have another article on these and I'll try to find it.
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 34043
71 440+6+6 4791A, 4792A
70 426 4745S, 4746S
71 426 4969S, 4970S
Round head with integral bracket
3438338 (Holley)
DR11144 4669A, 4670A
Hex head with cap, and integral bracket
3412059 (Holley)
DR1114420
69 440+6
Hex head with cap, and integral bracket
3438333 (Same as 2875975) (TQ)
DR1114429
71 340 4972S, 4973S
Round head with integral bracket