I have some *core* carbs for sale. First one is a Holley List # 1850-2 600CFM vacuum secondary/manual choke Second one is a Holley List# 1850-3 600CFM vacuum secondary/manual choke These are good cores for a rebuild. I would like 70.00 each SHIPPED in the Cont. US, item will ship from 49259 zip code. PayPal for payment. Items will ship via USPS. Please PM with interest.