For Sale - Rochester Quadrajet Carb for 1970 Buick GS 455 Stage 1 7040246. This was on a GTO that I purchased a few years ago. The core appears original but was rebuilt for a Pontiac 400 some time back and the top and base-plate are not a match. I would like to sell so it could get redone and put on an original car. Please share any questions or concerns. $1000.