The bolts you need can be purchased anywhere they sell bolts. Should be roughly 3.5" long by the thread size in the intake either 1/4" or 5/16". If you want a stud sticking up out of the manifold to mount the carb on you could use a piece of redi rod but a bolt down through would be easier. Thread the bolt down into the manifold before you put the carb on and measure the thickness of the carb and the distance between the top of the bolt and manifold. You may have to trim the bolt if it bottoms out in the manifold before it tightens down the carb to avoid breaking the manifold.
