Another source to check out for having your Quadrajet rebuilt is a small shop in Waring, TX called Quadrajet Power. I had him build me a carb and he supplied the core. I haven't received it yet so I can't give a review but I liked what I saw on his website and on his Facebook page so I went with him. If you check out his Facebook page I think you will see my carb as he notes "going out to a G-Body". I was impressed by his sites that he seems to know these carbs well and appears to really pay attention to detail.