Has anyone ever used one of these? Steeda doesn't manufacture them anymore but they did several yrs ago. It's the chrome housing that covers the pulleys. I had this on one of my old cars and kept it when I sold the car. I tried installing it on my current car tonight and the fitment seems very tight on the top pulley. My old car had the factory eaton and my current car has a whipple. Any idea if this part will work with the whipple? I called Steeda today and they weren't much help since they don't make these any longer. Any help would be greatly appreciated. For what it's worth, my pulley sizes are 3.5 and 4.