I have a set of 2 inch race headers that have slip on collectors and 1 tube on each side goes out the fenderwell. I bought them from a guy several months ago who told me that they were A body headers. There is no manufacture info on them and have been sitting a while, but don't look to be used at all. Inside they are very clean. They are in good condition. See pics. They come completely apart so shipping might not be too bad. They do not have a flange on the collectors. $300 plus shipping.