Part number 22S80. List price in 1990 was $156.25 It is not specifically for a 4-71, it's an adapter to put the side draft carbs onto a 4bbl intake or adapter. You could use two of them on a 6 or 8 71, I think
Squirrel, What is your data source, if it's a catalog can you PLEASE post a picture or PM me and I can send you my contact info for a text or email, THANKS appreciate it. Nitro