Used Edelbrock Performer AFB Carb, electric choke, slightly spread bore, have no idea how old, or what it came off of, lots of dust from sitting a while. Was in the back of a newer EFI car I acquired, so not much knowledge about it, lady that traded the car in said her deceased husband had an older Chevelle. Stamped on the front ear is 1400 3075, and all I found out was it's a 600cfm, called a Chevrolet replacement, has a broken auto choke plastic rheostat, and still sells new for $425 to $500 online. These are very easy to tune and/or re-jet, as the power needles and jets can be changed without removing the carb.
If the ad is up, it's available, so inquiries asking "if available" and or without a phone number will be ignored. I don't text, and with limited time emails won't be answered without a contact number. So, a phone call is best for a prompt and accurate response. John at 53ZERO-477-71FIVE8