I bought a carter 4736s carb to have rebuilt for my 1970 roadrunner 383 automatic car with air grabber hood. now i have people telling me it is not the right carb and it should have a holley. what is the right carb for this car?

'70 was a funny year for 383 carburetors - I'm surprised color didn't matter.

but HOLLEY is the correct one for your RR! Is it a N95 car?

1970

383 manual - E & B-body - with ECS (N95)
orange HP engine 335hp
---------- Holley R4217-A ---------- part number 3418 537 on b'cast 37
383 manual - E & B-body - w/o ECS
orange HP engine 335hp engine on b'cast 084 with A/C & 087
---------- Holley R4367-A ---------- part number 3418 536 on b'cast 36
383 manual - E & B-body - w/o ECS & with "fresh air" (N96).
orange HP engine 335hp
---------- Holley R4736-1A ---------- part number 3512 964 on b'cast 64
383 manual - E & B-body - with ECS (N95) & with "fresh air" (N96).
orange HP engine 335hp
---------- Holley R4738-1A ---------- part number 3512 974 on b'cast 74

383 automatic - E, C & B-body - w/o A/C & w/o ECS
blue engine 330hp
---------- Carter 4736S ---------- part number 3418 538 on b'cast 38
383 automatic - E, C & B-body - with A/C (H51) & w/o ECS
blue engine 330hp
---------- Carter 4732S ---------- part number 3418 540 on b'cast 40
383 automatic - E, C & B-body - with ECS (N95)
blue engine 330hp
---------- Carter 4734S ---------- part number 3418 541 on b'cast 41

383 automatic - E & B-body - w/o A/C & w/o ECS
orange HP engine 335hp engine on b'cast 088
---------- Holley R4368-A ---------- part number 3418 542 on b'cast 42
383 automatic - E & B-body - w/o A/C & with "fresh air" (N96).
orange HP engine 335hp engine on b'cast 088
---------- Holley R4737-1A ---------- part number 3512 965 on b'cast 65
383 automatic - E & B-body - with ECS (N95)
orange HP engine 335hp
---------- Holley R4218-A ---------- part number 3418 543 on b'cast 43
383 automatic - E & B-body - with A/C (H51) & w/o ECS
orange HP engine 335hp engine on b'cast 089
---------- Holley R4369-A ---------- part number 3418 562 on b'cast 62
383 automatic - E & B-body - with ECS (N95) & with "fresh air" (N96).
orange HP engine 335hp
---------- Holley R4739-1A ---------- part number 3512 975 on b'cast 75

Yes, what Dan posted is correct, what adds to the confusion is that Carter and Holly used the same 4736 number.

Holley 4737, I think Harms may even have one.