So what's the deal? Which carb is the right one?

townsend said
The 3870902 Holley carb was used on 75-77 dodge vans with 225 engine and automatic transmission.
3830402 is the correct carb for your 1974 duster with 225 engine.

Thanks, townsend. Is this carb (3870902) also a Holley carb? If so, do you know the Holley model number? Thank you!