Holley 80712 670Cfm Carb $230

That 8105B you see on the side is just a casting number. The actual list number is stamped into the air horn. Looks to be a 770 Avenger. If so it'll have a list number 80770 I believe. You might want to verify that because that makes it a 770 not a 650 cfm. Good luck with the sale