Bracket mounts to intake with 2 bolts, positioning the throttle cable differently than the 4 bbl, relative to the attaching stud on the center carb. If you are switching from a 4 bbl to a tripower, you need one of these. Bracket is zinc plated and should not be painted. The clip and bolt shoud be left natural. I NEED TO ADD THAT THE PICTURE IS OF AN ORIGINAL BRACKET THAT HAS BEEN CUT AND WELDED AT THE FACTORY. THE REPRODUCTION BRACKET ACTUALLY LOOKS MUCH NICER. BUT, THE PURIST WILL WANT THE CUT/WELDED ONE.