The stock six pack 340 linkage is for E body and will not fit A body . I used the bracket on the manifold made for a 440 six pack , and redrilled for smallblock six pack . I used a threaded coupling from the hardware store to extend the length of the rod coming up from the bell rank of the 4bbl linkage so it would reach , and then I believe I did a tweak on the length of the 4 bbl linkage to hook it up to the six pack carb . It is easy. If you have a question , let me know , and I can take photos on my car.

------------------------ It doesn't matter what you do.........As long as you look good doing it !