I have 2 600 Holleys, 1 was used to break in a cam and then took off, the other is a fairly new carb but the front needle and seat was removed to put in a buddies carb. Both have electric chokes, 80457-8 is the list number on the new one, 80457 on the other. I just got a pic of the newer carb but I can send a pic of the other one. Text or call if interested. 606 217 3149, thanks Mike $150 for both