My 69 Shelby GT350 came with a carb that was obviously way too big for the engine. I replaced it with a more suitable Holly 600 cfm, but I'm trying to find out what this monster is and what engine(s) it's used on. I know some of you out there have this stuff committed to memory. It's a Holly carb with manual choke and the list number is 3259-1. Below the list number on the air horn also appears the number 0305. Thanks folks for the help.