We now carry chrome carburetor throttle return spring kits. These work great with Holley carbs. They include a bracket which bolts to the base of the carb, as well as two sets of springs, along with bushings to make sure there is no binding, and that everything works nice and smooth. A small detail that is often forgotten. Make sure these details are taken care of, and it'll be one less thing to hold up your build. We also carry other carburetor essentials such as gaskets, fuel lines, carb stud kits, etc.